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AI Earnings Predictions for Omeros Corporation (OMER)

Machine learning predictions based on historical earnings data and price patterns

Latest Prediction

BUY

1-Day Prediction

+15.66%

$15.85

100% positive prob.

5-Day Prediction

+14.63%

$15.70

100% positive prob.

20-Day Prediction

+32.58%

$18.16

95% positive prob.

Price at prediction: $13.70 Confidence: 100.0% Model AUC: 1.0000 Quarter: Q2 2026

Historical Earnings Predictions

Quarter Signal 1D Return 5D Return 20D Return Confidence Actual 5D
Q2 2026 BUY +15.66% +14.63% +32.58% 100.0% Pending
Q1 2026 SELL -9.83% -14.22% -7.47% 100.0% -13.91%
Q4 2025 SELL -10.68% -15.24% -5.15% 100.0% -7.10%

Earnings Transcripts

SEC 8-K filings with transcript text

View All
2026
Q2

Q2 2026 Earnings

8-K BUY

Aug 12, 2026 · 100% conf.

AI Prediction BUY

1D

+15.66%

$15.85

Act: +26.42%

5D

+14.63%

$15.70

20D

+32.58%

$18.16

Price: $13.70 Prob +5D: 100% AUC: 1.000
0001437749-26-027313

omer20260521_8k.htm

false 0001285819

0001285819

2026-08-12 2026-08-12

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported):August 12, 2026

OMEROS CORPORATION

(Exact name of Registrant as Specified in Its Charter)

Washington

001-34475

91-1663741

(State or Other Jurisdiction

of Incorporation)

(Commission File Number)

(IRS Employer

Identification No.)

201 Elliott Avenue West

Seattle, WA

98119

(Address of Principal Executive Offices)

(Zip Code)

Registrant’s Telephone Number, Including Area Code: (206) 676-5000

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities Registered Pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Common stock, $0.01 par value per share

OMER

The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company  ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On August 12, 2026, Omeros Corporation issued a press release announcing financial results for the three and six months ended June 30, 2026. A copy of such press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference.

The information in this Current Report on Form 8-K, including the exhibit hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to liability under that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. The information contained herein and in the accompanying exhibit, including any information contained on or accessible through any website reference in the exhibit shall not be incorporated by reference into any filing with the United States Securities and Exchange Commission made by Omeros Corporation, whether made before or after the date hereof, regardless of any general incorporation language in such filing. The inclusion of any website address in this Current Report on Form 8-K by incorporation by reference of the press release is as an inactive textual reference only.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit

Number

Description

99.1

Press release, dated August 12, 2026, pertaining to Omeros Corporation's financial results for the three and six months ended June 30, 2026

104

Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

OMEROS CORPORATION

Date: August 12, 2026

By:

/s/ Gregory A. Demopulos

Gregory A. Demopulos, M.D.

President, Chief Executive Officer and

Chairman of the Board of Directors

2026
Q1

Q1 2026 Earnings

8-K SELL

May 13, 2026 · 100% conf.

AI Prediction SELL

1D

-9.83%

$12.97

Act: -7.65%

5D

-14.22%

$12.33

Act: -13.91%

20D

-7.47%

$13.31

Act: -29.21%

Price: $14.38 Prob +5D: 0% AUC: 1.000
0001437749-26-016718

SEC.gov | Request Rate Threshold Exceeded

U.S. Securities and Exchange Commission

You’ve Exceeded the SEC’s Traffic Limit

Your request rate has exceeded the SEC’s maximum allowable requests per second. Your access to SEC.gov will be limited for 10 minutes.

Current guidelines limit each user to a total of no more than 10 requests per second, regardless of the number of machines used to submit requests. To ensure that SEC.gov remains available to all users, we reserve the right to block IP addresses that submit excessive requests.

The block will be lifted automatically by waiting 10 minutes. Continuing to exceed the SEC’s maximum allowable request rate during the time-out period will extend the duration of the time-out period. To ensure fair access for all users, please reduce the rate of your requests and visit SEC.gov again after the 10 minute time-out period has passed.

For best practices on efficiently downloading information from SEC.gov, including the latest EDGAR filings, visit sec.gov/developer. You can also sign up for email updates on the SEC open data program, including best practices that make it more efficient to download data, and SEC.gov enhancements that may impact scripted downloading processes. For more information, contact opendata@sec.gov.

For more information, please see the SEC’s Web Site Privacy and Security Policy. Thank you for your interest in the U.S. Securities and Exchange Commission.

Reference ID: 0.ce06d217.1784383832.ac0e7149

More Information

Internet Security Policy

By using this site, you are agreeing to security monitoring and auditing. For security purposes, and to ensure that the public service remains available to users, this government computer system employs programs to monitor network traffic to identify unauthorized attempts to upload or change information or to otherwise cause damage, including attempts to deny service to users.

Unauthorized attempts to upload information and/or change information on any portion of this site are strictly prohibited and are subject to prosecution under the Computer Fraud and Abuse Act of 1986 and the National Information Infrastructure Protection Act of 1996 (see Title 18 U.S.C. §§ 1001 and 1030).

To ensure our website performs well for all users, the SEC monitors the frequency of requests for SEC.gov content to ensure automated searches do not impact the ability of others to access SEC.gov content. We reserve the right to block IP addresses that submit excessive requests. Current guidelines limit users to a total of no more than 10 requests per second, regardless of the number of machines used to submit requests.

If a user or application submits more than 10 requests per second, further requests from the IP address(es) may be limited for a brief period. Once the rate of requests has dropped below the threshold for 10 minutes, the user may resume accessing content on SEC.gov. This SEC practice is designed to limit excessive automated searches on SEC.gov and is not intended or expected to impact individuals browsing the SEC.gov website.

Note that this policy may change as the SEC manages SEC.gov to ensure that the website performs efficiently and remains available to all users.

Note: We do not offer technical support for developing or debugging scripted downloading processes.

2025
Q4

Q4 2025 Earnings

8-K SELL

Mar 31, 2026 · 100% conf.

AI Prediction SELL

1D

-10.68%

$12.58

Act: -3.91%

5D

-15.24%

$11.93

Act: -7.10%

20D

-5.15%

$13.36

Act: -23.72%

Price: $14.08 Prob +5D: 0% AUC: 1.000
0001437749-26-010634

SEC.gov | Request Rate Threshold Exceeded

U.S. Securities and Exchange Commission

You’ve Exceeded the SEC’s Traffic Limit

Your request rate has exceeded the SEC’s maximum allowable requests per second. Your access to SEC.gov will be limited for 10 minutes.

Current guidelines limit each user to a total of no more than 10 requests per second, regardless of the number of machines used to submit requests. To ensure that SEC.gov remains available to all users, we reserve the right to block IP addresses that submit excessive requests.

The block will be lifted automatically by waiting 10 minutes. Continuing to exceed the SEC’s maximum allowable request rate during the time-out period will extend the duration of the time-out period. To ensure fair access for all users, please reduce the rate of your requests and visit SEC.gov again after the 10 minute time-out period has passed.

For best practices on efficiently downloading information from SEC.gov, including the latest EDGAR filings, visit sec.gov/developer. You can also sign up for email updates on the SEC open data program, including best practices that make it more efficient to download data, and SEC.gov enhancements that may impact scripted downloading processes. For more information, contact opendata@sec.gov.

For more information, please see the SEC’s Web Site Privacy and Security Policy. Thank you for your interest in the U.S. Securities and Exchange Commission.

Reference ID: 0.ce06d217.1784383834.ac0e7f0d

More Information

Internet Security Policy

By using this site, you are agreeing to security monitoring and auditing. For security purposes, and to ensure that the public service remains available to users, this government computer system employs programs to monitor network traffic to identify unauthorized attempts to upload or change information or to otherwise cause damage, including attempts to deny service to users.

Unauthorized attempts to upload information and/or change information on any portion of this site are strictly prohibited and are subject to prosecution under the Computer Fraud and Abuse Act of 1986 and the National Information Infrastructure Protection Act of 1996 (see Title 18 U.S.C. §§ 1001 and 1030).

To ensure our website performs well for all users, the SEC monitors the frequency of requests for SEC.gov content to ensure automated searches do not impact the ability of others to access SEC.gov content. We reserve the right to block IP addresses that submit excessive requests. Current guidelines limit users to a total of no more than 10 requests per second, regardless of the number of machines used to submit requests.

If a user or application submits more than 10 requests per second, further requests from the IP address(es) may be limited for a brief period. Once the rate of requests has dropped below the threshold for 10 minutes, the user may resume accessing content on SEC.gov. This SEC practice is designed to limit excessive automated searches on SEC.gov and is not intended or expected to impact individuals browsing the SEC.gov website.

Note that this policy may change as the SEC manages SEC.gov to ensure that the website performs efficiently and remains available to all users.

Note: We do not offer technical support for developing or debugging scripted downloading processes.

2025
Q4

Q4 2025 Earnings

8-K SELL

Jan 7, 2026 · 100% conf.

AI Prediction SELL

1D

-10.68%

$12.58

Act: -3.91%

5D

-15.24%

$11.93

Act: -7.10%

20D

-5.15%

$13.36

Act: -23.72%

Price: $14.08 Prob +5D: 0% AUC: 1.000
0001437749-26-000820

omer20260107_8k.htm

false 0001285819

0001285819

2026-01-07 2026-01-07

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): January 7, 2026

OMEROS CORPORATION

(Exact name of Registrant as Specified in Its Charter)

Washington

001-34475

91-1663741

(State or Other Jurisdiction

of Incorporation)

(Commission File Number)

(IRS Employer

Identification No.)

201 Elliott Avenue West

Seattle, WA

98119

(Address of Principal Executive Offices)

(Zip Code)

Registrant’s Telephone Number, Including Area Code: (206) 676-5000

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities Registered Pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Common stock, $0.01 par value per share

OMER

The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company  ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition.

As previously announced, on January 7, 2026, Omeros Corporation (the “Company” or “we”) held a conference call and webcast for investors, the prepared remarks for which included disclosure of certain preliminary, unaudited financial information for the fiscal year ended December 31, 2025. Accordingly, and consistent with the requirements of Item 2.02 of Form 8-K, this filing is being made to report that at December 31, 2025, we had approximately $171.5 million of cash and short-term investments available for operations. This figure is preliminary and unaudited. It is subject to completion of the Company’s customary financial closing procedures and adjustments.

The information in this Current Report on Form 8-K shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to liability under that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. The information contained herein shall not be incorporated by reference into any filing with the United States Securities and Exchange Commission made by Omeros Corporation, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

OMEROS CORPORATION

Date: January 7, 2026

By:

/s/ Gregory A. Demopulos

Gregory A. Demopulos, M.D.

President, Chief Executive Officer and

Chairman of the Board of Directors

2025
Q3

Q3 2025 Earnings

8-K

Nov 13, 2025

0001437749-25-034824

omer20250825_8k.htm

false 0001285819

0001285819

2025-11-13 2025-11-13

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): November 13, 2025

OMEROS CORPORATION

(Exact name of Registrant as Specified in Its Charter)

Washington

001-34475

91-1663741

(State or Other Jurisdiction

of Incorporation)

(Commission File Number)

(IRS Employer

Identification No.)

201 Elliott Avenue West

Seattle, WA

98119

(Address of Principal Executive Offices)

(Zip Code)

Registrant’s Telephone Number, Including Area Code: (206) 676-5000

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities Registered Pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Common stock, $0.01 par value per share

OMER

The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company  ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On November 13, 2025, Omeros Corporation issued a press release announcing financial results for the three and nine months ended September 30, 2025. A copy of such press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference.

The information in this Current Report on Form 8-K, including the exhibit hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to liability under that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. The information contained herein and in the accompanying exhibit, including any information contained on or accessible through any website reference in the exhibit shall not be incorporated by reference into any filing with the United States Securities and Exchange Commission made by Omeros Corporation, whether made before or after the date hereof, regardless of any general incorporation language in such filing. The inclusion of any website address in this Current Report on Form 8-K by incorporation by reference of the press release is as an inactive textual reference only.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit

Number

Description

99.1

Press release, dated November 13, 2025, pertaining to Omeros Corporation's financial results for the three and nine months ended September 30, 2025

104

Cover Page Interactive Data File (embedded within the Inline XBRL document)

*              Certain identified information has been excluded from the exhibit because it both (A) is not material and (B) would be competitively harmful if publicly disclosed.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

OMEROS CORPORATION

Date: November 13, 2025

By:

/s/ Gregory A. Demopulos

Gregory A. Demopulos, M.D.

President, Chief Executive Officer and

Chairman of the Board of Directors

2025
Q2

Q2 2025 Earnings

8-K

Aug 14, 2025

0001437749-25-026931

omer20250521_8k.htm

false 0001285819

0001285819

2025-08-14 2025-08-14

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): August 14, 2025

OMEROS CORPORATION

(Exact name of Registrant as Specified in Its Charter)

Washington

001-34475

91-1663741

(State or Other Jurisdiction

of Incorporation)

(Commission File Number)

(IRS Employer

Identification No.)

201 Elliott Avenue West

Seattle, WA

98119

(Address of Principal Executive Offices)

(Zip Code)

Registrant’s Telephone Number, Including Area Code: (206) 676-5000

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities Registered Pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Common stock, $0.01 par value per share

OMER

The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company  ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On August 14, 2025, Omeros Corporation issued a press release announcing financial results for the three and six months ended June 30, 2025. A copy of such press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference.

The information in this Current Report on Form 8-K, including the exhibit hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to liability under that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. The information contained herein and in the accompanying exhibit, including any information contained on or accessible through any website reference in the exhibit shall not be incorporated by reference into any filing with the United States Securities and Exchange Commission made by Omeros Corporation, whether made before or after the date hereof, regardless of any general incorporation language in such filing. The inclusion of any website address in this Current Report on Form 8-K by incorporation by reference of the press release is as an inactive textual reference only.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit

Number

Description

99.1

Press release, dated August 14, 2025, pertaining to Omeros Corporation's financial results for the three and six months ended June 30, 2025

104

Cover Page Interactive Data File (embedded within the Inline XBRL document)

*              Certain identified information has been excluded from the exhibit because it both (A) is not material and (B) would be competitively harmful if publicly disclosed.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

OMEROS CORPORATION

Date: August 14, 2025

By:

/s/ Gregory A. Demopulos

Gregory A. Demopulos, M.D.

President, Chief Executive Officer and

Chairman of the Board of Directors

2025
Q1

Q1 2025 Earnings

8-K

May 15, 2025

0001437749-25-017211

omer20250407_8k.htm

false 0001285819

0001285819

2025-05-12 2025-05-12

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 12, 2025

OMEROS CORPORATION

(Exact name of Registrant as Specified in Its Charter)

Washington

001-34475

91-1663741

(State or Other Jurisdiction

of Incorporation)

(Commission File Number)

(IRS Employer

Identification No.)

201 Elliott Avenue West

Seattle, WA

98119

(Address of Principal Executive Offices)

(Zip Code)

Registrant’s Telephone Number, Including Area Code: (206) 676-5000

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities Registered Pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Common stock, $0.01 par value per share

OMER

The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company  ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 1.01 Entry into a Definitive Material Agreement.

Convertible Note Exchange

On May 14, 2025, Omeros Corporation (the “Company”) completed the private exchange (the “Exchange”) of approximately $70.8 million aggregate principal amount of its outstanding Convertible Senior Notes due 2026 (the “2026 Notes”) on a one-for-one basis for newly issued Convertible Senior Notes due 2029 (the “New Notes”). The Exchange was conducted with a limited number of holders of the 2026 Notes pursuant to Exchange Agreements dated as of May 12, 2025 (each, an “Exchange Agreement”).

The New Notes were issued pursuant to an Indenture, dated as of August 14, 2020 (the “Base Indenture”), between the Company and Computershare Trust Company, National Association, as successor to Wells Fargo Bank, National Association, as trustee (the “Trustee”), as supplemented by a Second Supplemental Indenture, dated as of May 14, 2025 (the “Second Supplemental Indenture”), between the Company and the Trustee (the Base Indenture, as amended and supplemented by the Second Supplemental Indenture, the “Indenture”). The New Notes are senior, unsecured obligations of the Company.

The New Notes will mature on June 15, 2029 unless earlier converted, redeemed or repurchased in accordance with their terms prior to such date. Interest on the New Notes will be payable semi-annually in arrears at a rate of 9.50% per annum on each June 15 and December 15, beginning on December 15, 2025. The New Notes will be convertible at the option of the holder into shares of common stock, cash or a combination thereof, as elected by the Company, at any time prior to the close of business on the second scheduled trading day immediately preceding the maturity date. The initial conversion rate for the New Notes is equivalent to an initial conversion price of approximately $6.18 per share of the Company’s common stock. The conversion rate is subject to adjustment in certain circumstances as described in the Indenture.

Holders who convert their New Notes from, and including, November 14, 2025 to, but excluding, June 1, 2029 (except for any conversion in connection with a make-whole fundamental change) will also be entitled to an interest make-whole payment equal to the sum of the remaining scheduled payments of interest that would have been made on the New Notes to be converted had such New Notes remained outstanding from the conversion date through the earlier of (i) the date that is 18 months following the conversion date and (ii) the maturity date.

The New Notes will be redeemable, in whole or in part, at the Company’s option at any time, and from time to time, on or after June 20, 2027 and on or before the 50th scheduled trading day immediately before the maturity date, at a cash redemption price equal to the principal amount of the New Notes to be redeemed, plus accrued and unpaid interest to, but

2024
Q4

Q4 2024 Earnings

8-K

Mar 31, 2025

0001437749-25-010211

omer20241119_8k.htm

false 0001285819

0001285819

2025-03-31 2025-03-31

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): March 31, 2025

OMEROS CORPORATION

(Exact name of Registrant as Specified in Its Charter)

Washington

001-34475

91-1663741

(State or Other Jurisdiction

of Incorporation)

(Commission File Number)

(IRS Employer

Identification No.)

201 Elliott Avenue West

Seattle, WA

98119

(Address of Principal Executive Offices)

(Zip Code)

Registrant’s Telephone Number, Including Area Code: (206) 676-5000

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities Registered Pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Common stock, $0.01 par value per share

OMER

The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On March 31, 2025, Omeros Corporation issued a press release announcing financial results for the three months and year ended December 31, 2024. A copy of such press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference.

The information in this Current Report on Form 8-K, including the exhibit hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to liability under that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. The information contained herein and in the accompanying exhibit, including any information contained on or accessible through any website reference in the exhibit shall not be incorporated by reference into any filing with the United States Securities and Exchange Commission made by Omeros Corporation, whether made before or after the date hereof, regardless of any general incorporation language in such filing. The inclusion of any website address in this Current Report on Form 8-K by incorporation by reference of the press release is as an inactive textual reference only.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit

Number

Description

99.1

Press release, dated March 31, 2025, pertaining to Omeros Corporation’s financial results for the three months and year ended December 31, 2024.

104

Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

OMEROS CORPORATION

Date: March 31, 2025

By:

/s/ Gregory A. Demopulos

Gregory A. Demopulos, M.D.

President, Chief Executive Officer and

Chairman of the Board of Directors

2024
Q3

Q3 2024 Earnings

8-K

Nov 13, 2024

0001437749-24-034900

omer20240808_8k.htm

false 0001285819

0001285819

2024-11-13 2024-11-13

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): November 13, 2024

OMEROS CORPORATION

(Exact name of Registrant as Specified in Its Charter)

Washington

001-34475

91-1663741

(State or Other Jurisdiction

of Incorporation)

(Commission File Number)

(IRS Employer

Identification No.)

201 Elliott Avenue West

Seattle, WA

98119

(Address of Principal Executive Offices)

(Zip Code)

Registrant’s Telephone Number, Including Area Code: (206) 676-5000

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities Registered Pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Common stock, $0.01 par value per share

OMER

The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On November 13, 2024, Omeros Corporation issued a press release announcing financial results for the three and nine months ended September 30, 2024. A copy of such press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference.

The information in this Current Report on Form 8-K, including the exhibit hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to liability under that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. The information contained herein and in the accompanying exhibit, including any information contained on or accessible through any website reference in the exhibit shall not be incorporated by reference into any filing with the United States Securities and Exchange Commission made by Omeros Corporation, whether made before or after the date hereof, regardless of any general incorporation language in such filing. The inclusion of any website address in this Current Report on Form 8-K by incorporation by reference of the press release is as an inactive textual reference only.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit

Number

Description

99.1

Press release, dated November 13, 2024, pertaining to Omeros Corporation’s financial results for the three months and nine months ended September 30, 2024.

104

Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

OMEROS CORPORATION

Date: November 13, 2024

By:

/s/ Gregory A. Demopulos

Gregory A. Demopulos, M.D.

President, Chief Executive Officer and

Chairman of the Board of Directors

2024
Q2

Q2 2024 Earnings

8-K

Aug 7, 2024

0001437749-24-025179

omer20240523_8k.htm

false 0001285819

0001285819

2024-08-07 2024-08-07

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): August 7, 2024

OMEROS CORPORATION

(Exact name of Registrant as Specified in Its Charter)

Washington

001-34475

91-1663741

(State or Other Jurisdiction

of Incorporation)

(Commission File Number)

(IRS Employer

Identification No.)

201 Elliott Avenue West

Seattle, WA

98119

(Address of Principal Executive Offices)

(Zip Code)

Registrant’s Telephone Number, Including Area Code: (206) 676-5000

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities Registered Pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Common stock, $0.01 par value per share

OMER

The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On August 7, 2024, Omeros Corporation issued a press release announcing financial results for the three and six months ended June 30, 2024. A copy of such press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference.

The information in this Current Report on Form 8-K, including the exhibit hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to liability under that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. The information contained herein and in the accompanying exhibit, including any information contained on or accessible through any website reference in the exhibit shall not be incorporated by reference into any filing with the United States Securities and Exchange Commission made by Omeros Corporation, whether made before or after the date hereof, regardless of any general incorporation language in such filing. The inclusion of any website address in this Current Report on Form 8-K by incorporation by reference of the press release is as an inactive textual reference only.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit

Number

Description

99.1

Press release, dated August 7, 2024, pertaining to Omeros Corporation’s financial results for the three months and six months ended June 30, 2024.

104

Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

OMEROS CORPORATION

Date: August 7, 2024

By:

/s/ Gregory A. Demopulos

Gregory A. Demopulos, M.D.

President, Chief Executive Officer and

Chairman of the Board of Directors

2024
Q1

Q1 2024 Earnings

8-K

May 15, 2024

0001437749-24-017044

omer20240415_8k.htm

false 0001285819

0001285819

2024-05-15 2024-05-15

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 15, 2024

OMEROS CORPORATION

(Exact name of Registrant as Specified in Its Charter)

Washington

001-34475

91-1663741

(State or Other Jurisdiction

of Incorporation)

(Commission File Number)

(IRS Employer

Identification No.)

201 Elliott Avenue West

Seattle, WA

98119

(Address of Principal Executive Offices)

(Zip Code)

Registrant’s Telephone Number, Including Area Code: (206) 676-5000

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities Registered Pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Common stock, $0.01 par value per share

OMER

The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On May 15, 2024, Omeros Corporation issued a press release announcing financial results for the three months ended March 31, 2024. A copy of such press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference.

The information in this Current Report on Form 8-K, including the exhibit hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to liability under that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. The information contained herein and in the accompanying exhibit, including any information contained on or accessible through any website reference in the exhibit shall not be incorporated by reference into any filing with the United States Securities and Exchange Commission made by Omeros Corporation, whether made before or after the date hereof, regardless of any general incorporation language in such filing. The inclusion of any website address in this Current Report on Form 8-K by incorporation by reference of the press release is as an inactive textual reference only.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit

Number

Description

99.1

Press release, dated May 15, 2024, pertaining to Omeros Corporation’s financial results for the three months ended March 31, 2024.

104

Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

OMEROS CORPORATION

Date: May 15, 2024

By:

/s/ Gregory A. Demopulos

Gregory A. Demopulos, M.D.

President, Chief Executive Officer and

Chairman of the Board of Directors

2024
Q1

Q1 2024 Earnings

8-K

Apr 1, 2024

0001437749-24-010359

omer20231204_8k.htm

false 0001285819

0001285819

2024-04-01 2024-04-01

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): April 1, 2024

OMEROS CORPORATION

(Exact name of Registrant as Specified in Its Charter)

Washington

001-34475

91-1663741

(State or Other Jurisdiction

of Incorporation)

(Commission File Number)

(IRS Employer

Identification No.)

201 Elliott Avenue West

Seattle, WA

98119

(Address of Principal Executive Offices)

(Zip Code)

Registrant’s Telephone Number, Including Area Code: (206) 676-5000

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities Registered Pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Common stock, $0.01 par value per share

OMER

The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On April 1, 2024, Omeros Corporation issued a press release announcing financial results for the three months and year ended December 31, 2023. A copy of such press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference.

The information in this Current Report on Form 8-K, including the exhibit hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to liability under that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. The information contained herein and in the accompanying exhibit shall not be incorporated by reference into any filing with the United States Securities and Exchange Commission made by Omeros Corporation, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit

Number

Description

99.1

Press release, dated April 1,2024, pertaining to Omeros Corporation’s financial results for the three months and year ended December 31, 2023.

104

Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

OMEROS CORPORATION

Date: April 1, 2024

By:

/s/ Gregory A. Demopulos

Gregory A. Demopulos, M.D.

President, Chief Executive Officer and

Chairman of the Board of Directors

2023
Q3

Q3 2023 Earnings

8-K

Nov 9, 2023

0001437749-23-031249

omer20230905_8k.htm

false 0001285819

0001285819

2023-11-09 2023-11-09

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): November 9, 2023

OMEROS CORPORATION

(Exact name of Registrant as Specified in Its Charter)

Washington

001-34475

91-1663741

(State or Other Jurisdiction

of Incorporation)

(Commission File Number)

(IRS Employer

Identification No.)

201 Elliott Avenue West

Seattle, WA

98119

(Address of Principal Executive Offices)

(Zip Code)

Registrant’s Telephone Number, Including Area Code: (206) 676-5000

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities Registered Pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Common stock, $0.01 par value per share

OMER

The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On November 9, 2023, Omeros Corporation issued a press release announcing financial results for the three and nine months ended September 30, 2023. A copy of such press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference.

The information in this Current Report on Form 8-K, including the exhibit hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to liability under that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. The information contained herein and in the accompanying exhibit shall not be incorporated by reference into any filing with the United States Securities and Exchange Commission made by Omeros Corporation, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit

Number

Description

99.1

Press release, dated November 9, 2023, pertaining to Omeros Corporation’s financial results for the three and nine months ended September 30, 2023.

104

Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

OMEROS CORPORATION

Date: November 9, 2023

By:

/s/ Gregory A. Demopulos

Gregory A. Demopulos, M.D.

President, Chief Executive Officer and

Chairman of the Board of Directors

2023
Q2

Q2 2023 Earnings

8-K

Aug 9, 2023

0001558370-23-014088

0001285819false00012858192023-08-092023-08-09 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

​ Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported): August 9, 2023

OMEROS CORPORATION

(Exact name of Registrant as Specified in Its Charter)

​ Washington 001-34475 91-1663741

(State or Other Jurisdiction of Incorporation) (Commission File Number) (IRS Employer Identification No.)

201 Elliott Avenue West Seattle, WA

98119

(Address of Principal Executive Offices)

(Zip Code)

​ Registrant’s Telephone Number, Including Area Code: (206) 676-5000 ​ (Former Name or Former Address, if Changed Since Last Report) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): ​ ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ​ ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ​ ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ​ ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities Registered Pursuant to Section 12(b) of the Act: ​ Title of each class Trading Symbol(s) Name of each exchange on which registered

Common stock, $0.01 par value per share

OMER

The Nasdaq Stock Market LLC

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter). ​ ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​ ​

Item 2.02 Results of Operations and Financial Condition. On May 9, 2023, Omeros Corporation issued a press release announcing financial results for the three and six months ended June 30, 2023. A copy of such press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The information in this Current Report on Form 8-K, including the exhibit hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to liability under that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. The information contained herein and in the accompanying exhibit shall not be incorporated by reference into any filing with the United States Securities and Exchange Commission made by Omeros Corporation, whether made before or after the date hereof, regardless of any general incorporation language in such filing. Item 9.01 Financial Statements and Exhibits. (d) Exhibits. ​

Exhibit Number

Description

​ ​ ​

99.1 ​ Press release, dated August 9, 2023, pertaining to Omeros Corporation’s financial results for the three and six months ended June 30, 2023.

104 ​ Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​

OMEROS CORPORATION

​ ​ ​

Date: August 9, 2023 By: /s/ Gregory A. Demopulos

​ ​ Gregory A. Demopulos, M.D.

​ ​ President, Chief Executive Officer and

​ ​ Chairman of the Board of Directors

​ ​

2023
Q1

Q1 2023 Earnings

8-K

May 9, 2023

0001558370-23-008805

0001285819false00012858192023-05-092023-05-09 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

​ Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported): May 9, 2023

OMEROS CORPORATION

(Exact name of Registrant as Specified in Its Charter)

​ Washington 001-34475 91-1663741

(State or Other Jurisdiction of Incorporation) (Commission File Number) (IRS Employer Identification No.)

201 Elliott Avenue West Seattle, WA

98119

(Address of Principal Executive Offices)

(Zip Code)

​ Registrant’s Telephone Number, Including Area Code: (206) 676-5000 ​ (Former Name or Former Address, if Changed Since Last Report) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): ​ ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ​ ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ​ ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ​ ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities Registered Pursuant to Section 12(b) of the Act: ​ Title of each class Trading Symbol(s) Name of each exchange on which registered

Common stock, $0.01 par value per share

OMER

The Nasdaq Stock Market LLC

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter). ​ ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​ ​

Item 2.02 Results of Operations and Financial Condition. On May 9, 2023, Omeros Corporation issued a press release announcing financial results for the three months ended March 31, 2023. A copy of such press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The information in this Current Report on Form 8-K, including the exhibit hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to liability under that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. The information contained herein and in the accompanying exhibit shall not be incorporated by reference into any filing with the United States Securities and Exchange Commission made by Omeros Corporation, whether made before or after the date hereof, regardless of any general incorporation language in such filing. Item 9.01 Financial Statements and Exhibits. (d) Exhibits. ​

Exhibit Number

Description

​ ​ ​

99.1 ​ Press release, dated May 9, 2023, pertaining to Omeros Corporation’s financial results for the three months ended March 31, 2023.

104 ​ Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​

OMEROS CORPORATION

​ ​ ​

Date: May 9, 2023 By: /s/ Gregory A. Demopulos

​ ​ Gregory A. Demopulos, M.D.

​ ​ President, Chief Executive Officer and

​ ​ Chairman of the Board of Directors

​ ​

2022
Q4

Q4 2022 Earnings

8-K

Mar 13, 2023

0001558370-23-003572

0001285819false00012858192023-03-132023-03-13 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

​ Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported): March 13, 2023

OMEROS CORPORATION

(Exact name of Registrant as Specified in Its Charter)

​ Washington 001-34475 91-1663741

(State or Other Jurisdiction of Incorporation) (Commission File Number) (IRS Employer Identification No.)

201 Elliott Avenue West Seattle, WA

98119

(Address of Principal Executive Offices)

(Zip Code)

​ Registrant’s Telephone Number, Including Area Code: (206) 676-5000 ​ (Former Name or Former Address, if Changed Since Last Report) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): ​ ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ​ ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ​ ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ​ ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities Registered Pursuant to Section 12(b) of the Act: ​ Title of each class Trading Symbol(s) Name of each exchange on which registered

Common stock, $0.01 par value per share

OMER

The Nasdaq Stock Market LLC

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter). ​ ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​ ​

Item 2.02 Results of Operations and Financial Condition. On March 13, 2023, Omeros Corporation issued a press release announcing financial results for the three months and year ended December 31, 2022. A copy of such press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The information in this Current Report on Form 8-K, including the exhibit hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to liability under that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. The information contained herein and in the accompanying exhibit shall not be incorporated by reference into any filing with the United States Securities and Exchange Commission made by Omeros Corporation, whether made before or after the date hereof, regardless of any general incorporation language in such filing. Item 9.01 Financial Statements and Exhibits. (d) Exhibits. ​

Exhibit Number

Description

​ ​ ​

99.1 ​ Press release, dated March 13, 2023, pertaining to Omeros Corporation’s financial results for the three months and year ended December 31, 2022.

104 ​ Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​

OMEROS CORPORATION

​ ​ ​

Date: March 13, 2023 By: /s/ Gregory A. Demopulos

​ ​ Gregory A. Demopulos, M.D.

​ ​ President, Chief Executive Officer and

​ ​ Chairman of the Board of Directors

​ ​

2022
Q4

Q4 2022 Earnings

8-K

Feb 6, 2023

0001558370-23-000894

0001285819false00012858192023-02-062023-02-06 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

​ Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported): February 6, 2023

OMEROS CORPORATION

(Exact name of Registrant as Specified in Its Charter)

​ Washington 001-34475 91-1663741

(State or Other Jurisdiction of Incorporation) (Commission File Number) (IRS Employer Identification No.)

201 Elliott Avenue West Seattle, WA

98119

(Address of Principal Executive Offices)

(Zip Code)

​ Registrant’s Telephone Number, Including Area Code: (206) 676-5000 ​ (Former Name or Former Address, if Changed Since Last Report) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): ​ ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ​ ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ​ ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ​ ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities Registered Pursuant to Section 12(b) of the Act: ​ Title of each class Trading Symbol(s) Name of each exchange on which registered

Common stock, $0.01 par value per share

OMER

The Nasdaq Stock Market LLC

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter). ​ ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​ ​

Item 2.02 Results of Operations and Financial Condition. On February 6, 2023, Omeros Corporation (the “Company”) issued a press release announcing the receipt from Rayner Surgical, Inc. of a $200 million milestone payment due under the Asset Purchase Agreement, dated December 1, 2021, among the Company, Rayner Surgical Inc. and Rayner Surgical Group Limited. The press release also includes in its fourth and fifth paragraphs disclosure regarding 2022 U.S. net sales of OMIDRIA® and the Company’s cash, cash equivalents and short-term investments as of December 31, 2022. These paragraphs of the press release are furnished in Exhibit 99.1 to this Current Report on Form 8-K and are incorporated herein by reference. The information in Item 2.02 of this Current Report on Form 8-K, including the information in the fourth and fifth paragraphs of the exhibit hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to liability under that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. The information contained herein and in the relevant paragraphs of the accompanying exhibit shall not be incorporated by reference into any filing with the United States Securities and Exchange Commission made by Omeros Corporation, whether made before or after the date hereof, regardless of any general incorporation language in such filing. Item 8.01 Other Events. The press release also includes further information regarding the achievement of the $200 million milestone event, the receipt of funds and the Company’s intended use of proceeds. A copy of the press release is filed as Exhibit 99.1 to this Current Report on Form 8-K and incorporated herein by reference, with the exception of the fourth and fifth paragraphs of the press release, which is furnished as set forth in Item 2.02 above. Item 9.01 Financial Statements and Exhibits. (d) Exhibits. ​

Exhibit Number

Description

​ ​ ​

99.1 ​ Press release, dated February 6, 2023.

104 ​ Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​

OMEROS CORPORATION

​ ​ ​

Date: February 6, 2023 By: /s/ Gregory A. Demopulos

​ ​ Gregory A. Demopulos, M.D.

​ ​ President, Chief Executive Officer and

​ ​ Chairman of the Board of Directors

​ ​

2022
Q3

Q3 2022 Earnings

8-K

Nov 9, 2022

0001558370-22-017140

0001285819false00012858192022-11-092022-11-09 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

​ Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported): November 9, 2022

OMEROS CORPORATION

(Exact name of Registrant as Specified in Its Charter)

​ Washington 001-34475 91-1663741

(State or Other Jurisdiction of Incorporation) (Commission File Number) (IRS Employer Identification No.)

201 Elliott Avenue West Seattle, WA

98119

(Address of Principal Executive Offices)

(Zip Code)

​ Registrant’s Telephone Number, Including Area Code: (206) 676-5000 ​ (Former Name or Former Address, if Changed Since Last Report) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): ​ ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ​ ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ​ ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ​ ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities Registered Pursuant to Section 12(b) of the Act: ​ Title of each class Trading Symbol(s) Name of each exchange on which registered

Common stock, $0.01 par value per share

OMER

The Nasdaq Stock Market LLC

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter). ​ ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​ ​

Item 2.02 Results of Operations and Financial Condition. On November 9, 2022, Omeros Corporation issued a press release announcing financial results for the three and nine months ended September 30, 2022. A copy of such press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The information in this Current Report on Form 8-K, including the exhibit hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to liability under that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. The information contained herein and in the accompanying exhibit shall not be incorporated by reference into any filing with the United States Securities and Exchange Commission made by Omeros Corporation, whether made before or after the date hereof, regardless of any general incorporation language in such filing. Item 9.01 Financial Statements and Exhibits. (d) Exhibits. ​

Exhibit Number

Description

​ ​ ​

99.1 ​ Press release, dated November 9, 2022, pertaining to Omeros Corporation’s financial results for the three and nine months ended September 30, 2022.

104 ​ Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​

OMEROS CORPORATION

​ ​ ​

Date: November 9, 2022 By: /s/ Gregory A. Demopulos

​ ​ Gregory A. Demopulos, M.D.

​ ​ President, Chief Executive Officer and

​ ​ Chairman of the Board of Directors

​ ​

2022
Q2

Q2 2022 Earnings

8-K

Aug 9, 2022

0001558370-22-012871

0001285819false00012858192022-08-092022-08-09 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

​ Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported): August 9, 2022

OMEROS CORPORATION

(Exact name of Registrant as Specified in Its Charter)

​ Washington 001-34475 91-1663741

(State or Other Jurisdiction of Incorporation) (Commission File Number) (IRS Employer Identification No.)

201 Elliott Avenue West Seattle, WA

98119

(Address of Principal Executive Offices)

(Zip Code)

​ Registrant’s Telephone Number, Including Area Code: (206) 676-5000 ​ (Former Name or Former Address, if Changed Since Last Report) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): ​ ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ​ ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ​ ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ​ ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities Registered Pursuant to Section 12(b) of the Act: ​ Title of each class Trading Symbol(s) Name of each exchange on which registered

Common stock, $0.01 par value per share

OMER

The Nasdaq Stock Market LLC

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter). ​ ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​ ​

Item 2.02 Results of Operations and Financial Condition. On August 9, 2022, Omeros Corporation issued a press release announcing financial results for the three and six months ended June 30, 2022. A copy of such press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The information in this Current Report on Form 8-K, including the exhibit hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to liability under that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. The information contained herein and in the accompanying exhibit shall not be incorporated by reference into any filing with the United States Securities and Exchange Commission made by Omeros Corporation, whether made before or after the date hereof, regardless of any general incorporation language in such filing. Item 9.01 Financial Statements and Exhibits. (d) Exhibits. ​

Exhibit Number

Description

​ ​ ​

99.1 ​ Press release, dated August 9, 2022, pertaining to Omeros Corporation’s financial results for the three and six months ended June 30, 2022.

104 ​ Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​

OMEROS CORPORATION

​ ​ ​

Date: August 9, 2022 By: /s/ Gregory A. Demopulos

​ ​ Gregory A. Demopulos, M.D.

​ ​ President, Chief Executive Officer and

​ ​ Chairman of the Board of Directors

​ ​

2022
Q1

Q1 2022 Earnings

8-K

May 10, 2022

0001558370-22-008110

0001285819false00012858192022-05-102022-05-10 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

​ Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported): May 10, 2022

OMEROS CORPORATION

(Exact name of Registrant as Specified in Its Charter)

​ Washington 001-34475 91-1663741

(State or Other Jurisdiction of Incorporation) (Commission File Number) (IRS Employer Identification No.)

201 Elliott Avenue West Seattle, WA

98119

(Address of Principal Executive Offices)

(Zip Code)

​ Registrant’s Telephone Number, Including Area Code: (206) 676-5000 ​ (Former Name or Former Address, if Changed Since Last Report) ​ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): ​ ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ​ ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ​ ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ​ ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities Registered Pursuant to Section 12(b) of the Act: ​ Title of each class Trading Symbol(s) Name of each exchange on which registered

Common stock, $0.01 par value per share

OMER

The Nasdaq Stock Market LLC

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter). ​ ​ Emerging growth company ☐ ​ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​ ​

Item 2.02 Results of Operations and Financial Condition. On May 10, 2022, Omeros Corporation issued a press release announcing financial results for the three months ended March 31, 2022. A copy of such press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The information in this Current Report on Form 8-K, including the exhibit hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to liability under that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. The information contained herein and in the accompanying exhibit shall not be incorporated by reference into any filing with the United States Securities and Exchange Commission made by Omeros Corporation, whether made before or after the date hereof, regardless of any general incorporation language in such filing. Item 9.01 Financial Statements and Exhibits. (d) Exhibits. ​

Exhibit Number

Description

​ ​ ​

99.1 ​ Press release, dated May 10, 2022, pertaining to Omeros Corporation’s financial results for the three months ended March 31, 2022.

104 ​ Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​

OMEROS CORPORATION

​ ​ ​

Date: May 10, 2022 By: /s/ Gregory A. Demopulos

​ ​ Gregory A. Demopulos, M.D.

​ ​ President, Chief Executive Officer and

​ ​ Chairman of the Board of Directors

​ ​

About Omeros Corporation (OMER) Earnings

This page provides Omeros Corporation (OMER) earnings call transcripts from SEC 8-K filings along with AI-powered predictions for post-earnings price movements. Our machine learning models analyze historical earnings data, pre-earnings price patterns, volume changes, and volatility to predict 1-day, 5-day, and 20-day returns after each earnings release.

Earnings transcripts are sourced directly from SEC EDGAR filings. Predictions are generated using gradient boosting models trained on OMER's historical earnings reactions. All predicted returns are shown as percentages, and predicted prices are calculated from the closing price at the time of prediction. Past performance does not guarantee future results.

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