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Reference ID: 0.c706d217.1786388436.87e0de4

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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.

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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.c706d217.1784333689.ccadfcbb

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.

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pkoh-202603040000076282false00000762822026-03-042026-03-04

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 4, 2026

Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter)

Ohio 34-1867219 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)

6065 Parkland Boulevard, Cleveland,Ohio 44124 (Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code

(440) 947-2000

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 classTrading Symbol(s)Name of each exchange on which registered Common Stock, Par Value $1.00 Per SharePKOHThe 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.):

☐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 or Rule 12b-2 of the Securities Exchange Act of 1934.

☐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. ¨

2

Item 2.02Results of Operations and Financial Condition.

On March 4, 2026, Park-Ohio Holdings Corp. issued a press release announcing its year ended December 31, 2025 results. The press release is attached hereto as Exhibit 99.1. The information contained in this Current Report shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number  Description 99.1  Park-Ohio Holdings Corp. Press Release, dated March 4, 2026

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

3

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.

Park-Ohio Holdings Corp.

(Registrant)

Dated:March 4, 2026 /s/ Patrick W. Fogarty Patrick W. Fogarty Vice President and Chief Financial Officer

4

pkoh-202511050000076282false00000762822025-11-052025-11-05

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 5, 2025

Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter)

Ohio 34-1867219 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)

6065 Parkland Boulevard, Cleveland,Ohio 44124 (Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code

(440) 947-2000

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 classTrading Symbol(s)Name of each exchange on which registered Common Stock, Par Value $1.00 Per SharePKOHThe 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.):

☐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 or Rule 12b-2 of the Securities Exchange Act of 1934.

☐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. ¨

2

Item 2.02Results of Operations and Financial Condition.

On November 5, 2025, Park-Ohio Holdings Corp. issued a press release announcing its quarter ended September 30, 2025 results. The press release is attached hereto as Exhibit 99.1. The information contained in this Current Report shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number  Description 99.1  Park-Ohio Holdings Corp. Press Release, dated November 5, 2025

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

3

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.

Park-Ohio Holdings Corp.

(Registrant)

Dated:November 5, 2025 /s/ Patrick W. Fogarty Patrick W. Fogarty Vice President and Chief Financial Officer

4

pkoh-202508060000076282false00000762822025-08-062025-08-06

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) August 6, 2025

Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter)

Ohio 34-1867219 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)

6065 Parkland Boulevard, Cleveland,Ohio 44124 (Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code

(440) 947-2000

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 classTrading Symbol(s)Name of each exchange on which registered Common Stock, Par Value $1.00 Per SharePKOHThe 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.):

☐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 or Rule 12b-2 of the Securities Exchange Act of 1934.

☐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. ¨

2

Item 2.02Results of Operations and Financial Condition.

On August 6, 2025, Park-Ohio Holdings Corp. issued a press release announcing its quarter ended June 30, 2025 results. The press release is attached hereto as Exhibit 99.1. The information contained in this Current Report shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number  Description 99.1  Park-Ohio Holdings Corp. Press Release, dated August 6, 2025

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

3

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.

Park-Ohio Holdings Corp.

(Registrant)

Dated:August 6, 2025 /s/ Patrick W. Fogarty Patrick W. Fogarty Vice President and Chief Financial Officer

4

8-K

00000762820001068148false 0000076282 2025-07-15 2025-07-15 0000076282 pkoh:PARKOHIOINDUSTRIESINCMember 2025-07-15 2025-07-15

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) July 15, 2025

PARK-OHIO HOLDINGS CORP.

(Exact name of registrant as specified in its charter)

Ohio

000-03134

34-1867219

(State or other jurisdiction of incorporation)

(Commission File Number)

(IRS Employer Identification No.)

6065 Parkland Boulevard, Cleveland, Ohio

44124

(Address of principal executive offices)

(Zip Code)

Registrant’s telephone number, including area code: (440) 947-2000 Not applicable (Former name or former address, if changed since last report.)

PARK-OHIO INDUSTRIES, INC.

(Exact name of registrant as specified in its charter)

Ohio

333-43005-01

34-6520107

(State or other jurisdiction of incorporation)

(Commission File Number)

(IRS Employer Identification No.)

6065 Parkland Boulevard, Cleveland, Ohio

44124

(Address of principal executive offices)

(Zip Code)

Registrant’s telephone number, including area code: (440) 947-2000

Not applicable (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.):

☐ 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, Par Value $1.00 Per Share

PKOH

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 or Rule 12b-2 of the Securities Exchange Act of 1934. 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 July 15, 2025, Park-Ohio Holdings Corp. (the “Company”) issued a press release announcing preliminary financial results for the quarter ended June 30, 2025. The press release is attached hereto as Exhibit 99.1. The information contained in this Current Report shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01

Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number

Description

99.1

Park-Ohio Holdings Corp. Press Release, dated July 15, 2025

104

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

2

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.

Park-Ohio Holdings Corp.

(Registrant)

Dated: July 16, 2025

/s/ Patrick W. Fogarty

Patrick W. Fogarty Vice President and Chief Financial Officer

Park-Ohio Industries, Inc.

(Registrant)

Dated: July 16, 2025

/s/ Patrick W. Fogarty

Patrick W. Fogarty

Vice President and Chief Financial Officer

3

pkoh-202505060000076282false00000762822025-05-062025-05-06

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) May 6, 2025

Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter)

Ohio 34-1867219 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)

6065 Parkland Boulevard, Cleveland,Ohio 44124 (Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code

(440) 947-2000

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 classTrading Symbol(s)Name of each exchange on which registered Common Stock, Par Value $1.00 Per SharePKOHThe 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.):

☐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 or Rule 12b-2 of the Securities Exchange Act of 1934.

☐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. ¨

2

Item 2.02Results of Operations and Financial Condition.

On May 6, 2025, Park-Ohio Holdings Corp. issued a press release announcing its quarter ended March 31, 2025 results. The press release is attached hereto as Exhibit 99.1. The information contained in this Current Report shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number  Description 99.1  Park-Ohio Holdings Corp. Press Release, dated May 6, 2025

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

3

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.

Park-Ohio Holdings Corp.

(Registrant)

Dated:May 6, 2025 /s/ Patrick W. Fogarty Patrick W. Fogarty Vice President and Chief Financial Officer

4

pkoh-202503050000076282false00000762822025-03-052025-03-05

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 5, 2025

Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter)

Ohio 34-1867219 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)

6065 Parkland Boulevard, Cleveland,Ohio 44124 (Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code

(440) 947-2000

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 classTrading Symbol(s)Name of each exchange on which registered Common Stock, Par Value $1.00 Per SharePKOHThe 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.):

☐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 or Rule 12b-2 of the Securities Exchange Act of 1934.

☐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. ¨

2

Item 2.02Results of Operations and Financial Condition.

On March 5, 2025, Park-Ohio Holdings Corp. issued a press release announcing its year ended December 31, 2024 results. The press release is attached hereto as Exhibit 99.1. The information contained in this Current Report shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number  Description 99.1  Park-Ohio Holdings Corp. Press Release, dated March 5, 2025

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

3

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.

Park-Ohio Holdings Corp.

(Registrant)

Dated:March 5, 2025 /s/ Patrick W. Fogarty Patrick W. Fogarty Vice President and Chief Financial Officer

4

pkoh-202411060000076282false00000762822024-11-062024-11-06

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) November 6, 2024

Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter)

Ohio 34-1867219 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)

6065 Parkland Boulevard, Cleveland,Ohio 44124 (Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code

(440) 947-2000

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 classTrading Symbol(s)Name of each exchange on which registered Common Stock, Par Value $1.00 Per SharePKOHThe 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.):

☐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 or Rule 12b-2 of the Securities Exchange Act of 1934.

☐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. ¨

2

Item 2.02Results of Operations and Financial Condition.

On November 6, 2024, Park-Ohio Holdings Corp. issued a press release announcing its quarter ended September 30, 2024 results. The press release is attached hereto as Exhibit 99.1. The information contained in this Current Report shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number  Description 99.1  Park-Ohio Holdings Corp. Press Release, dated November 6, 2024

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

3

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.

Park-Ohio Holdings Corp.

(Registrant)

Dated:November 6, 2024 /s/ Patrick W. Fogarty Patrick W. Fogarty Vice President and Chief Financial Officer

4

pkoh-202408070000076282false00000762822024-08-072024-08-07

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

Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter)

Ohio 34-1867219 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)

6065 Parkland Boulevard, Cleveland,Ohio 44124 (Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code

(440) 947-2000

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 classTrading Symbol(s)Name of each exchange on which registered Common Stock, Par Value $1.00 Per SharePKOHThe 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.):

☐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 or Rule 12b-2 of the Securities Exchange Act of 1934.

☐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. ¨

2

Item 2.02Results of Operations and Financial Condition.

On August 7, 2024, Park-Ohio Holdings Corp. issued a press release announcing its quarter ended June 30, 2024 results. The press release is attached hereto as Exhibit 99.1. The information contained in this Current Report shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number  Description 99.1  Park-Ohio Holdings Corp. Press Release, dated August 7, 2024

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

3

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.

Park-Ohio Holdings Corp.

(Registrant)

Dated:August 7, 2024 /s/ Patrick W. Fogarty Patrick W. Fogarty Vice President and Chief Financial Officer

4

pkoh-202404290000076282false00000762822024-04-292024-04-29

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 29, 2024

Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter)

Ohio 34-1867219 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)

6065 Parkland Boulevard, Cleveland,Ohio 44124 (Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code

(440) 947-2000

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 classTrading Symbol(s)Name of each exchange on which registered Common Stock, Par Value $1.00 Per SharePKOHThe 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.):

☐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 or Rule 12b-2 of the Securities Exchange Act of 1934.

☐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. ¨

2

Item 2.02Results of Operations and Financial Condition.

On April 29, 2024, Park-Ohio Holdings Corp. issued a press release announcing its quarter ended March 31, 2024 results. The press release is attached hereto as Exhibit 99.1. The information contained in this Current Report shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number  Description 99.1  Park-Ohio Holdings Corp. Press Release, dated April 29, 2024

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

3

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.

Park-Ohio Holdings Corp.

(Registrant)

Dated:April 29, 2024 /s/ Patrick W. Fogarty Patrick W. Fogarty Vice President and Chief Financial Officer

4

pkoh-202403050000076282false00000762822024-03-052024-03-05

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 5, 2024

Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter)

Ohio 34-1867219 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)

6065 Parkland Boulevard, Cleveland,Ohio 44124 (Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code

(440) 947-2000

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 classTrading Symbol(s)Name of each exchange on which registered Common Stock, Par Value $1.00 Per SharePKOHThe 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.):

☐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 or Rule 12b-2 of the Securities Exchange Act of 1934.

☐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. ¨

2

Item 2.02Results of Operations and Financial Condition.

On March 5, 2024, Park-Ohio Holdings Corp. issued a press release announcing its year ended December 31, 2023 results. The press release is attached hereto as Exhibit 99.1. The information contained in this Current Report shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number  Description 99.1  Park-Ohio Holdings Corp. Press Release, dated March 5, 2024

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

3

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.

Park-Ohio Holdings Corp.

(Registrant)

Dated:March 5, 2024 /s/ Patrick W. Fogarty Patrick W. Fogarty Vice President and Chief Financial Officer

4

pkoh-202311010000076282false00000762822023-11-012023-11-01

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) November 1, 2023

Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter)

Ohio 34-1867219 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)

6065 Parkland Boulevard, Cleveland,Ohio 44124 (Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code

(440) 947-2000

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 classTrading Symbol(s)Name of each exchange on which registered Common Stock, Par Value $1.00 Per SharePKOHThe 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.):

☐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 or Rule 12b-2 of the Securities Exchange Act of 1934.

☐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. ¨

2

Item 2.02Results of Operations and Financial Condition.

On November 1, 2023, Park-Ohio Holdings Corp. issued a press release announcing its quarter ended September 30, 2023 results. The press release is attached hereto as Exhibit 99.1. The information contained in this Current Report shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number  Description 99.1  Park-Ohio Holdings Corp. Press Release, dated November 1, 2023

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

3

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.

Park-Ohio Holdings Corp.

(Registrant)

Dated:November 1, 2023 /s/ Patrick W. Fogarty Patrick W. Fogarty Vice President and Chief Financial Officer

4

pkoh-202308020000076282false00000762822023-08-022023-08-02

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 2, 2023

Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter)

Ohio 34-1867219 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)

6065 Parkland Boulevard, Cleveland,Ohio 44124 (Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code

(440) 947-2000

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 classTrading Symbol(s)Name of each exchange on which registered Common Stock, Par Value $1.00 Per SharePKOHThe 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.):

☐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 or Rule 12b-2 of the Securities Exchange Act of 1934.

☐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. ¨

2

Item 2.02Results of Operations and Financial Condition.

On August 2, 2023, Park-Ohio Holdings Corp. issued a press release announcing its quarter ended June 30, 2023 results. The press release is attached hereto as Exhibit 99.1. The information contained in this Current Report shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number  Description 99.1  Park-Ohio Holdings Corp. Press Release, dated August 2, 2023

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

3

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.

Park-Ohio Holdings Corp.

(Registrant)

Dated:August 2, 2023 /s/ Patrick W. Fogarty Patrick W. Fogarty Vice President and Chief Financial Officer

4

pkoh-202305030000076282false00000762822023-05-032023-05-03

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 3, 2023

Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter)

Ohio 34-1867219 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)

6065 Parkland Boulevard, Cleveland,Ohio 44124 (Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code

(440) 947-2000

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 classTrading Symbol(s)Name of each exchange on which registered Common Stock, Par Value $1.00 Per SharePKOHThe 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.):

☐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 or Rule 12b-2 of the Securities Exchange Act of 1934.

☐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. ¨

2

Item 2.02Results of Operations and Financial Condition.

On May 3, 2023, Park-Ohio Holdings Corp. issued a press release announcing its quarter ended March 31, 2023 results. The press release is attached hereto as Exhibit 99.1. The information contained in this Current Report shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number  Description 99.1  Park-Ohio Holdings Corp. Press Release, dated May 3, 2023

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

3

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.

Park-Ohio Holdings Corp.

(Registrant)

Dated:May 3, 2023 /s/ Patrick W. Fogarty Patrick W. Fogarty Vice President and Chief Financial Officer

4

pkoh-202303150000076282false00000762822023-03-152023-03-15

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) March 15, 2023

Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter)

Ohio 34-1867219 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)

6065 Parkland Boulevard, Cleveland,Ohio 44124 (Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code

(440) 947-2000

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 classTrading Symbol(s)Name of each exchange on which registered Common Stock, Par Value $1.00 Per SharePKOHThe 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.):

☐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 or Rule 12b-2 of the Securities Exchange Act of 1934.

☐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. ¨

2

Item 2.02Results of Operations and Financial Condition.

On March 15, 2023, Park-Ohio Holdings Corp. issued a press release announcing its year ended December 31, 2022 results. The press release is attached hereto as Exhibit 99.1. The information contained in this Current Report shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number  Description 99.1  Park-Ohio Holdings Corp. Press Release, dated March 15, 2023

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

3

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.

Park-Ohio Holdings Corp.

(Registrant)

Dated:March 15, 2023 /s/ Patrick W. Fogarty Patrick W. Fogarty Vice President and Chief Financial Officer

4

pkoh-202211070000076282false00000762822022-11-072022-11-07

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) November 7, 2022

Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter)

Ohio 34-1867219 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)

6065 Parkland Boulevard, Cleveland,Ohio 44124 (Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code

(440) 947-2000

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 classTrading Symbol(s)Name of each exchange on which registered Common Stock, Par Value $1.00 Per SharePKOHThe 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.):

☐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 or Rule 12b-2 of the Securities Exchange Act of 1934.

☐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. ¨

2

Item 2.02Results of Operations and Financial Condition.

On November 7, 2022, Park-Ohio Holdings Corp. issued a press release announcing its quarter ended September 30, 2022 results. The press release is attached hereto as Exhibit 99.1. The information contained in this Current Report shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number  Description 99.1  Park-Ohio Holdings Corp. Press Release, dated November 7, 2022

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

3

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.

Park-Ohio Holdings Corp.

(Registrant)

Dated:November 7, 2022 /s/ Patrick W. Fogarty Patrick W. Fogarty Vice President and Chief Financial Officer

4

pkoh-202208020000076282false00000762822022-08-022022-08-02

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 2, 2022

Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter)

Ohio 34-1867219 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)

6065 Parkland Boulevard, Cleveland,Ohio 44124 (Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code

(440) 947-2000

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 classTrading Symbol(s)Name of each exchange on which registered Common Stock, Par Value $1.00 Per SharePKOHThe 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.):

☐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 or Rule 12b-2 of the Securities Exchange Act of 1934.

☐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. ¨

2

Item 2.02Results of Operations and Financial Condition.

On August 2, 2022, Park-Ohio Holdings Corp. issued a press release announcing its quarter ended June 30, 2022 results. The press release is attached hereto as Exhibit 99.1. The information contained in this Current Report shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number  Description 99.1  Park-Ohio Holdings Corp. Press Release, dated August 2, 2022

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

3

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.

Park-Ohio Holdings Corp.

(Registrant)

Dated:August 2, 2022 /s/ Patrick W. Fogarty Patrick W. Fogarty Vice President and Chief Financial Officer

4

pkoh-202205090000076282false00000762822022-05-092022-05-09

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, 2022

Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter)

Ohio 34-1867219 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)

6065 Parkland Boulevard, Cleveland,Ohio 44124 (Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code

(440) 947-2000

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 classTrading Symbol(s)Name of each exchange on which registered Common Stock, Par Value $1.00 Per SharePKOHThe 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.):

☐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 or Rule 12b-2 of the Securities Exchange Act of 1934.

☐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. ¨

2

Item 2.02Results of Operations and Financial Condition.

On May 9, 2022, Park-Ohio Holdings Corp. issued a press release announcing its quarter ended March 31, 2022 results. The press release is attached hereto as Exhibit 99.1. The information contained in this Current Report shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number  Description 99.1  Park-Ohio Holdings Corp. Press Release, dated May 9, 2022

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

3

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.

Park-Ohio Holdings Corp.

(Registrant)

Dated:May 9, 2022 /s/ Patrick W. Fogarty Patrick W. Fogarty Vice President and Chief Financial Officer

4

pkoh-202203150000076282false00000762822022-03-152022-03-15

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) March 15, 2022

Commission file number: 000-03134 Park-Ohio Holdings Corp. (Exact name of registrant as specified in its charter)

Ohio 34-1867219 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)

6065 Parkland Boulevard, Cleveland,Ohio 44124 (Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code

(440) 947-2000

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 classTrading Symbol(s)Name of each exchange on which registered Common Stock, Par Value $1.00 Per SharePKOHThe 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.):

☐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 or Rule 12b-2 of the Securities Exchange Act of 1934.

☐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. ¨

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Item 2.02Results of Operations and Financial Condition.

On March 15, 2022, Park-Ohio Holdings Corp. issued a press release announcing its year ended December 31, 2021 results. The press release is attached hereto as Exhibit 99.1. The information contained in this Current Report shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number  Description 99.1  Park-Ohio Holdings Corp. Press Release, dated March 15, 2022

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

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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.

Park-Ohio Holdings Corp.

(Registrant)

Dated:March 15, 2022 /s/ Patrick W. Fogarty Patrick W. Fogarty Vice President and Chief Financial Officer

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