[Form 4] Shimmick Corporation Insider Trading Activity

Rhea-AI Filing Summary

Shimmick Corporation (SHIM) – Form 4 insider activity

Director and 10%+ holder Mitchell B. Goldsteen, acting through GOHO, LLC, reported three open-market sales of common stock on 07/07, 07/08 and 07/09 2025. In total 10,987 shares were sold at weighted-average prices spanning $1.86-$2.03, for proceeds of roughly US$22 k.

The trades were executed under a Rule 10b5-1 plan adopted 20-Aug-2024, signalling they were pre-scheduled. Following the transactions, Goldsteen still beneficially owns 21,336,080 shares, indicating the disposition represented only about 0.05 % of his stake. No derivative security activity was disclosed.

While insider selling can be viewed cautiously, the small size relative to the remaining holding and the 10b5-1 framework reduce negative interpretation. The filing does not contain operational or financial performance data but serves as a sentiment datapoint and may add modest supply to the market.

Positive

• Trades executed under a pre-arranged Rule 10b5-1 plan, minimizing the likelihood of information-based selling.
• Insider retains approximately 21.3 million shares, preserving strong alignment with shareholders.

Negative

• Presence of insider selling can still be perceived as a bearish sentiment indicator despite its small size.
• Additional share supply from continued sales could exert minor downward pressure on the stock.

Insights

Securities Analyst

TL;DR: Minor 10b5-1 insider sale; neutral impact given tiny % of holding.

The sale of 10,987 SHIM shares by director/10 % owner Mitchell Goldsteen is immaterial versus his 21.3 million-share position. Execution under a previously adopted Rule 10b5-1 plan lessens concerns over adverse signalling or near-term outlook doubts. Yet, insiders rarely buy when bearish, so any recurring pattern should be monitored. Absent further context on business fundamentals, I view the disclosure as neutral to the investment case and only modestly incremental to trading liquidity.

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)
07/07/2025

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	07/07/2025	07/07/2025	S(1)		2,677	D	$1.9(2)	21,344,390	I	By GOHO, LLC(3)
Common Stock, par value $0.01 per share	07/08/2025	07/08/2025	S(1)		7,000	D	$1.97(4)	21,337,390	I	By GOHO, LLC(3)
Common Stock, par value $0.01 per share	07/09/2025	07/09/2025	S(1)		1,310	D	$2.01(5)	21,336,080	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 $1.86 to $1.92, 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 $1.94 to $2.01, 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.

5. The price reported in column 4 is a weighted average price. The shares were acquired in multiple transactions at prices ranging from $1.97 to $2.03, 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	07/09/2025
	** 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

How many Shimmick (SHIM) shares did Mitchell B. Goldsteen sell?

He sold 10,987 common shares over three days (07/07-07/09 2025).

What prices were the SHIM shares sold at?

Weighted-average prices ranged from $1.86 to $2.03 per share.

How many SHIM shares does the insider still own after the transactions?

Goldsteen, via GOHO LLC, continues to hold 21,336,080 shares.

Was the sale executed under a Rule 10b5-1 trading plan?

Yes, the transactions were carried out under a 10b5-1 plan adopted on 20-Aug-2024.

Does this Form 4 filing include any derivative security activity?

No. No options, warrants or other derivatives were reported in Table II.