[Form 4] Shimmick Corporation Insider Trading Activity

Rhea-AI Filing Summary

Mitchell B. Goldsteen, a director and 10% owner of Shimmick Corporation (SHIM), sold a total of 25,206 shares under a pre-existing Rule 10b5-1 plan. The Form 4 discloses two dispositions: 10,500 shares on 08/28/2025 at a weighted-average price of $3.18 and 14,706 shares on 08/29/2025 at a weighted-average price of $2.96. After these transactions, the reporting person beneficially owned 21,099,873 shares indirectly through GOHO, LLC, of which he is the sole managing member. The sales were effected pursuant to a 10b5-1 plan adopted on August 20, 2024, and were reported by power of attorney on 09/02/2025.

Positive

• Sales were executed under a documented Rule 10b5-1 plan, which helps mitigate allegations of opportunistic insider trading.
• Timely and specific disclosure of transaction dates, weighted-average prices, and remaining indirect beneficial ownership (21,099,873 shares).
• Reporter retains substantial indirect ownership through GOHO, LLC, indicating ongoing economic alignment with the issuer.

Negative

• Insider disposed of 25,206 shares across two transactions (10,500 and 14,706 shares), which could be viewed negatively by some investors.
• Weighted-average sale prices were relatively low at $3.18 and $2.96, reflecting realized dispositions at those price levels.

Insights

Financial Analyst

TL;DR: Insider sold a modest number of shares under a 10b5-1 plan; holdings remain substantial, suggesting continued alignment with shareholders.

The Form 4 shows routine, preplanned dispositions totaling 25,206 shares executed over two days at weighted-average prices of $3.18 and $2.96. These sales were made under a Rule 10b5-1 plan adopted on August 20, 2024, which provides defense against insider trading claims for scheduled trades. Despite the sales, indirect beneficial ownership remains large at 21,099,873 shares via GOHO, LLC, indicating ongoing substantial economic exposure to SHIM.

Corporate Governance Expert

TL;DR: Disclosure is consistent with governance best practices: transactions are timely reported and tied to a 10b5-1 plan.

The filing clearly identifies the relationship (director and 10% owner), the use of a 10b5-1 plan adopted on August 20, 2024, and provides weighted-average pricing with an offer to supply per-price details if requested. Indirect ownership through GOHO, LLC is disclosed along with a disclaimer of beneficial ownership beyond pecuniary interest. The form was signed via power of attorney on 09/02/2025, meeting filing formalities.

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).

X

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^*

Goldsteen Mitchell B.

(Last) (First) (Middle)

C/O SHIMMICK CORPORATION

530 TECHNOLOGY DRIVE, SUITE 300

(Street)

IRVINE CA 92618

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Shimmick Corp [ SHIM ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
08/28/2025

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, par value $0.01 per share	08/28/2025	08/28/2025	S(1)		10,500	D	$3.18(2)	21,114,579	I	By GOHO, LLC(3)
Common Stock, par value $0.01 per share	08/29/2025	08/29/2025	S(1)		14,706	D	$2.96(4)	21,099,873	I	By GOHO, LLC(3)

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 sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 sales plan adopted by the reporting person on August 20, 2024.

2. The price reported in column 4 is a weighted average price. The shares were acquired in multiple transactions at prices ranging from $3.08 to $3.28, inclusive. Upon request by the SEC staff, the issuer, or any security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price will be provided.

3. The reporting person owns the securities indirectly through GOHO, LLC, of which Mr. Goldsteen is the sole managing member. Mr. Goldsteen disclaims beneficial ownership of these securities, except to the extent of any pecuniary interest therein.

4. The price reported in column 4 is a weighted average price. The shares were acquired in multiple transactions at prices ranging from $2.80 to $3.15, inclusive. Upon request by the SEC staff, the issuer, or any security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price will be provided.

	/s/ John Carpenter, Power of Attorney for Mitchell B. Goldsteen	09/02/2025
	** 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 transactions did Mitchell B. Goldsteen report on Form 4 for SHIM?

The Form 4 reports dispositions of 10,500 shares on 08/28/2025 and 14,706 shares on 08/29/2025, totaling 25,206 shares.

Were the SHIM sales part of a planned trading program?

Yes. The sales were effected pursuant to a Rule 10b5-1 plan adopted on August 20, 2024.

What prices were reported for the SHIM transactions?

The filing reports weighted-average prices of $3.18 for the 08/28/2025 sales and $2.96 for the 08/29/2025 sales, with per-price ranges disclosed in the explanations.

How many SHIM shares does the reporting person beneficially own after these transactions?

After the reported transactions, the reporting person beneficially owned 21,099,873 shares indirectly through GOHO, LLC.

What is the nature of the reporting person’s ownership in SHIM?

Ownership is indirect via GOHO, LLC, of which Mr. Goldsteen is the sole managing member; he disclaims beneficial ownership except to the extent of any pecuniary interest.