ASRT

asrt-202603160001808665false00018086652026-03-162026-03-16

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 16, 2026

ASSERTIO HOLDINGS, INC.

(Exact name of registrant as specified in its charter)

Delaware 001-39294 85-0598378 (State or Other Jurisdiction of Incorporation) (Commission File Number) (IRS Employer Identification No.)

100 S. Saunders Road, Suite 300, Lake Forest, IL 60045 (Address of Principal Executive Offices; Zip Code)

(224) 419-7106 (Registrant’s telephone number, including area code)

Not Applicable (Former Name or Former Address, if Changed Since Last Report)

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, $0.0001 par value ASRTThe Nasdaq Stock Market LLC

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))

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.  o

Item 2.02Results of Operations and Financial Condition

On March 16, 2026, Assertio Holdings, Inc. (the “Company”) issued a press release announcing its financial results for the fourth quarter and fiscal year ended December 31, 2025. The press release is attached hereto as Exhibit 99.1 and is incorporated by reference herein.

The information in Item 2.02 of 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. The information contained herein shall not be incorporated by reference into any filing with the Securities and Exchange Commission made by the Company, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

Item 9.01Financial Statements and Exhibits

(d) Exhibits

Exhibit NumberDescription 99.1Assertio Holdings, Inc. Press Release issued on March 16, 2026

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

SIGNATURES

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

ASSERTIO HOLDINGS, INC.

Date: March 16, 2026By:/s/ Mark L. Reisenauer Mark L. Reisenauer Chief Executive Officer (Principal Executive Officer)

asrt-202511100001808665false00018086652025-11-102025-11-10

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): November 10, 2025

ASSERTIO HOLDINGS, INC.

(Exact name of registrant as specified in its charter)

Delaware 01-39294 85-0598378 (State or Other Jurisdiction of Incorporation) (Commission File Number) (IRS Employer Identification No.)

100 S. Saunders Road, Suite 300, Lake Forest, IL 60045 (Address of Principal Executive Offices; Zip Code)

(224) 419-7106 (Registrant’s telephone number, including area code)

Not Applicable (Former Name or Former Address, if Changed Since Last Report)

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, $0.0001 par value ASRTThe Nasdaq Stock Market LLC

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))

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 2.02Results of Operations and Financial Condition.

On November 10, 2025, Assertio Holdings, Inc. (the “Company”) issued a press release announcing its financial results for the three and nine months ended September 30, 2025, and Mr. Paul Schwichtenberg’s promotion described under Item 5.02 below. The press release is attached hereto as Exhibit 99.1 and is incorporated by reference herein. The information in Item 2.02 of this Current Report on Form 8-K (“Form 8-K”) shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended. The information contained herein shall not be incorporated by reference into any filing with the Securities and Exchange Commission (the “SEC”) made by the Company, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

Item 5.02Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

Appointment of the President and Chief Operating Officer

Effective November 3, 2025, the board of directors of the Company appointed Mr. Paul Schwichtenberg, the Company’s Chief Transformation Officer, to serve as the Company’s President and Chief Operating Officer.

Item 9.01Financial Statements and Exhibits.

(d)Exhibits

99.1Assertio Holdings, Inc. Press Release issued on November 10, 2025

104Cover 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.

ASSERTIO HOLDINGS, INC.

November 10, 2025By:/s/ Mark L. Reisenauer Mark L. Reisenauer Chief Executive Officer (Principal Executive Officer)

asrt-202508110001808665false00018086652025-08-112025-08-11

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 11, 2025

ASSERTIO HOLDINGS, INC.

(Exact name of registrant as specified in its charter)

Delaware 01-39294 85-0598378 (State or Other Jurisdiction of Incorporation) (Commission File Number) (IRS Employer Identification No.)

100 S. Saunders Road, Suite 300, Lake Forest, IL 60045 (Address of Principal Executive Offices; Zip Code)

(224) 419-7106 (Registrant’s telephone number, including area code)

Not Applicable (Former Name or Former Address, if Changed Since Last Report)

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, $0.0001 par value ASRTThe Nasdaq Stock Market LLC

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))

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 2.02Results of Operations and Financial Condition.

On August 11, 2025, Assertio Holdings, Inc. (the “Company”) issued a press release announcing its financial results for the three and six months ended June 30, 2025. The press release is attached hereto as Exhibit 99.1 and is incorporated by reference herein. The information in Item 2.02 of this Current Report on Form 8-K ("Form 8-K") shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended. The information contained herein shall not be incorporated by reference into any filing with the Securities and Exchange Commission (the "SEC") made by the Company, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

Item 9.01Financial Statements and Exhibits.

(d)Exhibits

99.1Assertio Holdings, Inc. Press Release issued on August 11, 2025

104Cover 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.

ASSERTIO HOLDINGS, INC.

Date: August 11, 2025 By:/s/ Brendan P. O’Grady Brendan P. O’Grady Chief Executive Officer (Principal Executive Officer)