Cooper-Standard: Millstreet 13G/A shows 0.00 shares

Cooper-Standard Holdings Inc.: Millstreet Capital Management LLC filed an amendment to a Schedule 13G/A reporting 0.00 shares beneficially owned of Cooper-Standard common stock (CUSIP 21676P103).

Rhea-AI Filing Summary

Cooper-Standard Holdings Inc.: Millstreet Capital Management LLC filed an amendment to a Schedule 13G/A reporting 0.00 shares beneficially owned of Cooper-Standard common stock (CUSIP 21676P103).

The filing lists Millstreet Capital Management LLC and principals Brian D. Connolly and Craig M. Kelleher, shows 0.00% ownership, and is signed on 05/15/2026.

Insights

Corporate Governance Analyst

Schedule 13G/A amendment reports no beneficial ownership.

The amendment lists Millstreet Capital Management LLC and two named individuals and states 0.00 shares beneficially owned and 0.00% of the class, indicating no current reported position in Cooper-Standard common stock.

Timing and signatures are shown as 05/15/2026; cash‑flow treatment and transaction history are not disclosed in the excerpt. Subsequent filings would be needed to show any position changes.

Key Figures

Beneficially owned: 0.00 shares Percent of class: 0.00% CUSIP: 21676P103 +2 more

5 metrics

Beneficially owned 0.00 shares Amount beneficially owned reported in Item 4(a)

Percent of class 0.00% Percent of class reported in Item 4(b)

CUSIP 21676P103 Identifies Cooper-Standard common stock in filing header

Signature date 05/15/2026 Dates on signatures for the amendment

Amendment indicator Amendment No. 1 Header showing this is an amendment to a prior Schedule 13G

Key Terms

Schedule 13G/A, Beneficially owned, CUSIP

3 terms

Schedule 13G/A regulatory

"Amendment No. 1 ) Cooper-Standard Holdings Inc."

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

Beneficially owned regulatory

"Item 4. | Ownership (a) | Amount beneficially owned: 0.00 shares"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

CUSIP financial

"Title of class of securities: Common Stock (e) | CUSIP No.: 21676P103"

A CUSIP is a nine-character alphanumeric code that uniquely identifies a U.S. or Canadian financial security—such as a stock, bond, or fund share—like a Social Security number for an investment. It matters to investors because brokers, exchanges and record-keepers use the CUSIP to match trades, track ownership, settle transactions and pull accurate records, reducing errors and ensuring money and securities go to the right place.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/15/2026 - 04:16 PM EDT Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Cooper-Standard Holdings Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

21676P103

(CUSIP Number)

03/31/2026

(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): 21676P103

1

Names of Reporting Persons

Millstreet Capital Management 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

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

CUSIP Number(s): 21676P103

1

Names of Reporting Persons

Connolly Brian D

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

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0 %

12

Type of Reporting Person (See Instructions)

IN, HC

SCHEDULE 13G

CUSIP Number(s): 21676P103

1

Names of Reporting Persons

Kelleher Craig

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

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0 %

12

Type of Reporting Person (See Instructions)

IN, HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Cooper-Standard Holdings Inc.
(b)	Address of issuer's principal executive offices: 40300 Traditions Drive, Northville, Michigan, 48168
Item 2.
(a)	Name of person filing: Millstreet Capital Management LLC Brian D. Connolly Craig M. Kelleher
(b)	Address or principal business office or, if none, residence: Millstreet Capital Management LLC Brian D. Connolly Craig M. Kelleher c/o Millstreet Capital Management LLC 545 Boylston Street, 8th Floor Boston, MA 02116
(c)	Citizenship: Millstreet Capital Management LLC - Delaware Brian D. Connolly - United States Craig M. Kelleher - United States
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 21676P103
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: 0.00 shares
(b)	Percent of class: 0.00 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0.00 shares
	(ii) Shared power to vote or to direct the vote: 0.00 shares
	(iii) Sole power to dispose or to direct the disposition of: 0.00 shares
	(iv) Shared power to dispose or to direct the disposition of: 0.00 shares
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.
	Not Applicable
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.

Millstreet Capital Management LLC

Signature:	/s/ Brian D. Connolly
Name/Title:	Brian D. Connolly, Managing Member
Date:	05/15/2026

Connolly Brian D

Signature:	/s/ Brian D. Connolly
Name/Title:	Brian D. Connolly
Date:	05/15/2026

Kelleher Craig

Signature:	/s/ Craig M. Kelleher
Name/Title:	Craig M. Kelleher
Date:	05/15/2026