Cooper-Standard (CPS) director adds 6,885 shares via trust purchases

Rhea-AI Filing Summary

Cooper-Standard Holdings Inc. director David John Mastrocola reported three open-market purchases of common stock through a trust. Across March 11–13, the trust bought a total of 6,885 shares at prices ranging from $29.77 to $31.00 per share.

After these transactions, the trust’s indirect holdings increased to 25,000 shares of Cooper-Standard common stock. One trading day’s price of $29.77 is disclosed as a weighted-average price for multiple trades between $29.25 and $30.25.

Insider Trade Summary

Net Buyer: 6,885 shares ($208,144)

Net Buy 3 txns

Insider Mastrocola David John

Role Director

Bought 6,885 shs ($208K)

Type	Security	Shares	Price	Value
Purchase	Common stock	3,391	$29.77	$101K
Purchase	Common stock	1,494	$30.25	$45K
Purchase	Common stock	2,000	$31.00	$62K

Holdings After Transaction: Common stock — 25,000 shares (Indirect, By Trust)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Mastrocola David John

(Last) (First) (Middle)

40300 TRADITIONS DRIVE

(Street)

NORTHVILLE MI 48168

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Cooper-Standard Holdings Inc. [ CPS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
03/11/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common stock	03/11/2026		P		2,000	A	$31	20,115	I	By Trust
Common stock	03/12/2026		P		1,494	A	$30.25	21,609	I	By Trust
Common stock	03/13/2026		P		3,391	A	$29.77(1)	25,000	I	By Trust

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $29.25 to $30.25, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth above.

Remarks:

	/s/Denise Balog, on behalf of David J. Mastrocola under Power of Attorney	03/13/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transactions did Cooper-Standard (CPS) report in this Form 4?

The filing shows director David John Mastrocola made three open-market purchases of Cooper-Standard common stock through a trust, totaling 6,885 shares over March 11–13, all classified as non-derivative transactions.

How many Cooper-Standard (CPS) shares did the director buy and at what prices?

The trust bought 2,000 shares at $31.00, 1,494 shares at $30.25, and 3,391 shares at a $29.77 weighted-average price, for a total of 6,885 shares of Cooper-Standard common stock.

What is David John Mastrocola’s Cooper-Standard (CPS) shareholding after these trades?

Following the reported purchases, a trust associated with director David John Mastrocola holds 25,000 shares of Cooper-Standard common stock indirectly, as disclosed under "By Trust" nature of ownership in the Form 4.

Were the Cooper-Standard (CPS) insider trades direct or through an entity?

All reported transactions are labeled as indirect ownership, with the nature of ownership described as "By Trust". This means the trust, rather than Mastrocola personally, is listed as holding the Cooper-Standard common stock.

Does the Cooper-Standard (CPS) Form 4 mention any derivative securities or options?

The filing shows transactions only in non-derivative common stock. The derivativeSummary section is empty, indicating no options, warrants, or other derivative securities are reported in this specific Form 4.

What does the weighted-average price disclosure mean in the Cooper-Standard (CPS) Form 4?

One day’s purchase is reported at a $29.77 weighted-average price, with trades ranging from $29.25 to $30.25. The insider states they can provide full breakdowns of the number of shares bought at each specific price upon request.