Shimmick COO granted new RSU awards

Tacker Sarah Beth reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Tacker Sarah Beth reported acquisition or exercise transactions in this Form 4 filing.

Shimmick Corp reported that Chief Operating Officer Sarah Beth Tacker received two new awards of Restricted Stock Units (RSUs). She was granted 88,652 RSUs and a separate award of 26,596 RSUs, each representing the right to receive one share of common stock per unit.

The 88,652 RSUs vest in full and settle into common shares on May 29, 2026, subject to her continued service. The 26,596 RSUs vest and settle in three equal annual installments beginning on April 29, 2027, conditioned on her continued employment with the company.

Insider Trade Summary

Grant/Award: 115,248 shares

Grant/Award 2 txns

Insider Tacker Sarah Beth

Role Chief Operating Officer

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	26,596	$0.00	$0.00
Grant/Award	Restricted Stock Units	88,652	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 115,248 contracts (Direct)

Footnotes (3)

1. F1. (1) RSUs convert into common stock on a one-for-one basis.
2. F2. (2) The RSUs will vest in full and settle into shares of common stock on May 29, 2026, subject to Reporting Person's continued service through such date.
3. F3. (3) The RSUs will vest in full and settle into shares of common stock in three equal annual installments beginning on April 29, 2027, subject to Reporting Person's continued employment.

Key Figures

RSU award size: 88,652 RSUs Second RSU award size: 26,596 RSUs Vesting date first RSU grant: May 29, 2026 +2 more

5 metrics

RSU award size 88,652 RSUs Grant of Restricted Stock Units to COO on April 29, 2026

Second RSU award size 26,596 RSUs Additional RSU grant to COO on April 29, 2026

Vesting date first RSU grant May 29, 2026 88,652 RSUs vest in full on this date

Vesting start second RSU grant April 29, 2027 26,596 RSUs vest in three equal annual installments beginning on this date

RSU conversion ratio 1 RSU : 1 share RSUs convert into common stock on a one-for-one basis

Key Terms

Restricted Stock Units, RSUs, vest, settle into shares, +1 more

5 terms

Restricted Stock Units financial

"She was granted 88,652 RSUs and a separate award of 26,596 RSUs"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

RSUs financial

"The RSUs will vest in full and settle into shares of common stock"

RSUs, or restricted stock units, are a form of company shares given to employees as part of their compensation. They are typically awarded with certain restrictions, such as a waiting period before they can be fully owned or sold, similar to earning a gift that becomes fully yours over time. For investors, RSUs can impact a company's stock offerings and reflect how much the company relies on stock-based incentives to attract and retain talent.

vest financial

"The RSUs will vest in full and settle into shares of common stock on May 29, 2026"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

settle into shares financial

"The RSUs will vest in full and settle into shares of common stock"

grant/award acquisition financial

"transaction_action: grant/award acquisition"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Shimmick (SHIM) report for its COO?

Shimmick reported RSU grants to its COO. Chief Operating Officer Sarah Beth Tacker received two awards of Restricted Stock Units, which give her the right to receive common shares in the future if service-based vesting conditions are met.

How many Restricted Stock Units did the Shimmick (SHIM) COO receive?

The COO received two RSU awards. One award covers 88,652 Restricted Stock Units and a second award covers 26,596 Restricted Stock Units, each RSU representing a contingent right to one share of Shimmick common stock.

When do the new RSUs for Shimmick (SHIM) COO vest?

The RSUs have two vesting schedules. The 88,652 RSUs vest in full on May 29, 2026. The 26,596 RSUs vest in three equal annual installments starting April 29, 2027, each tied to continued employment.

Does the Shimmick (SHIM) Form 4 show any stock sales by the COO?

The Form 4 only reports RSU grants. The transactions are coded as awards of derivatives (RSUs), with no open-market stock purchases or sales reported for Chief Operating Officer Sarah Beth Tacker in this filing.

How do Shimmick (SHIM) RSUs convert into common stock for the COO?

The RSUs convert one-for-one into common shares. Each Restricted Stock Unit will settle into one share of Shimmick common stock once the specified vesting dates are reached and the continued service conditions are satisfied.

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

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Accepted by SEC EDGAR 04/30/2026 - 04:05 PM EDT Learn about SEC filing dates

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^*

Tacker Sarah Beth

(Last) (First) (Middle)

530 TECHNOLOGY DRIVE

SUITE 300

(Street)

IRVINE CALIFORNIA 92618

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/29/2026

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

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

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

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

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
Restricted Stock Units	(1)	04/29/2026		A		26,596		(2)	(2)	Common Stock	26,596	$0	26,596	D
Restricted Stock Units	(1)	04/29/2026		A		88,652		(3)	(3)	Common Stock	88,652	$0	88,652	D

Explanation of Responses:

1. (1) RSUs convert into common stock on a one-for-one basis.

2. (2) The RSUs will vest in full and settle into shares of common stock on May 29, 2026, subject to Reporting Person's continued service through such date.

3. (3) The RSUs will vest in full and settle into shares of common stock in three equal annual installments beginning on April 29, 2027, subject to Reporting Person's continued employment.

Remarks:

Exhibit List: Exhibit 24 - Power of Attorney

	John Carpenter, Power of Attorney for Sarah Tacker	04/30/2026
	** 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.
* Form 4: SEC 1474 (03-26)