Ameriprise Financial (AP) discloses 4.5% Ampco-Pittsburgh ownership in 13G/A filing

Rhea-AI Filing Summary

Ameriprise Financial, Inc. and its subsidiary Columbia Management Investment Advisers, LLC report beneficial ownership of Ampco-Pittsburgh Corporation common stock. As of June 30, 2026, they report 905,679 shares, representing 4.5% of the common stock.

Both entities report 0 shares with sole voting or dispositive power and 905,679 shares with shared voting and shared dispositive power. Each reporting person disclaims beneficial ownership of the shares reported.

Key Figures

Shares beneficially owned: 905,679 shares Percent of class: 4.5% Shared voting power: 905,679 shares +4 more

7 metrics

Shares beneficially owned 905,679 shares Ampco-Pittsburgh common stock reported by Ameriprise and Columbia as of June 30, 2026

Percent of class 4.5% Portion of Ampco-Pittsburgh common stock represented by 905,679 shares

Shared voting power 905,679 shares Shares over which the reporting persons have shared power to vote or direct the vote

Shared dispositive power 905,679 shares Shares over which the reporting persons have shared power to dispose or direct disposition

Sole voting power 0 shares Shares with sole power to vote reported for each reporting person

Sole dispositive power 0 shares Shares with sole power to dispose reported for each reporting person

Event date 06/30/2026 Date as of which the ownership information is reported

Key Terms

beneficial ownership, shared voting power, shared dispositive power, parent holding company, +1 more

5 terms

beneficial ownership financial

"AFI, as the parent company of CMIA, may be deemed to beneficially own the shares"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

shared voting power financial

"6 | Shared Voting Power 905,679.00"

Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.

shared dispositive power financial

"8 | Shared Dispositive Power 905,679.00"

parent holding company financial

"If a parent holding company has filed this schedule, pursuant to (ii)(G)"

Schedule 13G regulatory

"Ownership of any shares reported on this Schedule."

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

FAQ

What stake in Ampco-Pittsburgh (AP) does Ameriprise report in this Schedule 13G/A?

Ameriprise Financial, Inc. and Columbia Management Investment Advisers, LLC report beneficial ownership of 905,679 shares of Ampco-Pittsburgh common stock, representing 4.5% of the outstanding class as of June 30, 2026.

Who are the reporting persons in the Ampco-Pittsburgh (AP) Schedule 13G/A?

The reporting persons are Ameriprise Financial, Inc. (AFI) and its subsidiary Columbia Management Investment Advisers, LLC (CMIA). AFI may be deemed to beneficially own the shares reported by CMIA, but each disclaims beneficial ownership.

How much voting power does Ameriprise have over Ampco-Pittsburgh (AP) shares?

The filing reports 0 shares with sole voting power and 905,679 shares with shared voting power over Ampco-Pittsburgh common stock, matching the shares over which they also have shared dispositive power.

What percentage of Ampco-Pittsburgh (AP) does 905,679 shares represent?

According to the Schedule 13G/A, the 905,679 shares beneficially owned by the reporting persons represent 4.5% of the outstanding common stock of Ampco-Pittsburgh Corporation.

Do Ameriprise and Columbia claim full beneficial ownership of their Ampco-Pittsburgh (AP) holdings?

No. The filing states that each of Ameriprise Financial, Inc. and Columbia Management Investment Advisers, LLC disclaims beneficial ownership of any shares reported on the schedule, despite being required to report them.

What type of filing is this Ampco-Pittsburgh (AP) document from Ameriprise?

This document is an Amendment No. 7 to a Schedule 13G, a beneficial ownership report for Ampco-Pittsburgh common stock, reflecting the reporting persons’ 4.5% stake as of June 30, 2026.

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Available on EDGAR 08/14/2026 - 11:19 AM Accepted by SEC EDGAR 08/14/2026 - 11:19 AM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 7)

Ampco-Pittsburgh Corporation

(Name of Issuer)

Common Stock

(Title of Class of Securities)

032037103

(CUSIP Number)

06/30/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 032037103

1

Names of Reporting Persons

Ameriprise Financial, Inc.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 905,679.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 905,679.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

905,679.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

4.5 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP Number(s): 032037103

1

Names of Reporting Persons

Columbia Management Investment Advisers, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

MINNESOTA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 905,679.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 905,679.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

905,679.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

4.5 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Ampco-Pittsburgh Corporation
(b)	Address of issuer's principal executive offices: 726 Bell Avenue, Suite 301, Carnegie, PA 15106
Item 2.
(a)	Name of person filing: (a) Ameriprise Financial, Inc. ("AFI") (b) Columbia Management Investment Advisers, LLC ("CMIA")
(b)	Address or principal business office or, if none, residence: (a) 145 Ameriprise Financial Center, Minneapolis, MN 55474 (b) 290 Congress Street, Boston, MA 02210
(c)	Citizenship: (a) Delaware (b) Minnesota
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 032037103
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: Incorporated by reference to Items (5)-(9) and (11) of the cover page pertaining to each reporting person. AFI, as the parent company of CMIA, may be deemed to beneficially own the shares reported herein by CMIA. Accordingly, the shares reported herein by AFI include those shares separately reported herein by CMIA. Each of AFI and CMIA disclaims beneficial ownership of any shares reported on this Schedule.
(b)	Percent of class: The information required by Item 4(b) is set forth in Rows (5)-(9) and (11) of the cover page for each Reporting Person hereto and is incorporated herein by reference for each Reporting Person.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: The information required by Item 4(c) is set forth in Rows (5)-(9) and (11) of the cover page for each Reporting Person hereto and is incorporated herein by reference for each Reporting Person.
	(ii) Shared power to vote or to direct the vote: The information required by Item 4(c) is set forth in Rows (5)-(9) and (11) of the cover page for each Reporting Person hereto and is incorporated herein by reference for each Reporting Person.
	(iii) Sole power to dispose or to direct the disposition of: The information required by Item 4(c) is set forth in Rows (5)-(9) and (11) of the cover page for each Reporting Person hereto and is incorporated herein by reference for each Reporting Person.
	(iv) Shared power to dispose or to direct the disposition of: The information required by Item 4(c) is set forth in Rows (5)-(9) and (11) of the cover page for each Reporting Person hereto and is incorporated herein by reference for each Reporting Person.
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. AFI: See Exhibit I
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Ameriprise Financial, Inc.

Signature:	/s/ Michael G. Clarke
Name/Title:	Michael G. Clarke, Senior Vice President, North America Head of Operations & Investor Services
Date:	08/14/2026

Columbia Management Investment Advisers, LLC

Signature:	/s/ Michael G. Clarke
Name/Title:	Michael G. Clarke, Senior Vice President, North America Head of Operations & Investor Services
Date:	08/14/2026

Comments accompanying signature: Contact Information Charles Chiesa VP Fund Treasurer Global Operations and Investor Services Telephone: 617-385-9593

Exhibit Information

Exhibit Index Exhibit I Identification and Classification of the Subsidiaries which Acquired the Security Being Reported on by the Parent Holding Company. Exhibit II Joint Filing Agreement