[Form 4] Shimmick Corporation Insider Trading Activity

Rhea-AI Filing Summary

Shimmick Corporation (SHIM) Form 4 filing: Director and 10% owner Mitchell B. Goldsteen disclosed two small open-market sales executed under a pre-arranged Rule 10b5-1 plan adopted 20 Aug 2024.

• 26 Jun 2025: sold 7,122 common shares at a weighted-average price of $1.69.
• 27 Jun 2025: sold 916 common shares at a weighted-average price of $1.71.

Total shares sold: 8,038. Following the transactions, Goldsteen—through his wholly owned GOHO, LLC—continues to hold 21,384,776 shares of Shimmick common stock. Ownership remains indirect (I); the filer disclaims beneficial ownership beyond his pecuniary interest.

The sales represent less than 0.04 % of Goldsteen’s post-transaction stake and therefore appear immaterial to the overall ownership structure. No derivative transactions were reported.

Positive

• Use of Rule 10b5-1 plan indicates pre-scheduled trading, enhancing transparency and reducing potential insider-trading concerns.
• Insider retains 21.38 million shares, maintaining significant skin in the game and alignment with shareholder interests.

Negative

• Director/10% owner sold shares, which some investors may interpret as a soft negative signal, even though the amount is immaterial.

Insights

Securities Analyst

TL;DR: Minor 10b5-1 insider sales; negligible dilution, neutral signal.

Goldsteen’s disposal of just 8,038 shares against a remaining 21.38 million-share position suggests routine liquidity rather than a meaningful change in sentiment. The use of a Rule 10b5-1 plan mitigates concerns about opportunistic timing, and the residual stake underscores continued alignment with shareholders. From a market-impact perspective, the sale is too small to affect float or control, so I deem the filing neutral for valuation.

Corporate Governance Expert

TL;DR: Transparent, pre-planned trade, governance posture intact.

The disclosure checks governance boxes: advance adoption of a 10b5-1 plan, precise weighted-average pricing, and clarification of indirect ownership through GOHO, LLC. The fractional reduction (<0.04 %) does not materially weaken insider alignment. No red flags emerge regarding compliance or potential conflicts of interest. Overall, this is routine housekeeping with no significant governance impact.

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)
06/26/2025

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	06/26/2025	06/26/2025	S(1)		7,122	D	$1.69(2)	21,385,692	I	By GOHO, LLC(3)
Common Stock, par value $0.01 per share	06/27/2025	06/27/2025	S(1)		916	D	$1.71(4)	21,384,776	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 $1.63 to $1.75, 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 $1.68 to $1.71, 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	06/27/2025
	** 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 a total of 8,038 common shares across two transactions on 26-27 Jun 2025.

At what prices were the SHIM shares sold?

Weighted-average prices were $1.69 on 26 Jun 2025 and $1.71 on 27 Jun 2025.

How many SHIM shares does Goldsteen still own after the sales?

He indirectly owns 21,384,776 common shares through GOHO, LLC.

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

Yes. The filing states the sales were made under a Rule 10b5-1 plan adopted 20 Aug 2024.

Does the filing report any derivative security transactions?

No derivative securities were acquired or disposed of in this Form 4.