SkyWater COO granted 21,221 RSUs in Form 4

Sakamoto John reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Sakamoto John reported acquisition or exercise transactions in this Form 4 filing.

SkyWater Technology President and COO John Sakamoto received a grant of 21,221 shares of common stock as restricted stock units (RSUs). The grant was made at no cash cost per share and is classified as a compensation-related award, not an open‑market purchase.

The RSUs vest in three equal installments on each of the first, second, and third anniversaries of the grant date, as long as Sakamoto continues in service on each vesting date. After this grant, he directly holds 141,395 shares of SkyWater Technology common stock.

Insider Trade Summary

Grant/Award: 21,221 shares

Grant/Award 1 txn

Insider Sakamoto John

Role President and COO

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	21,221	$0.00	$0.00

Holdings After Transaction: Common Stock — 141,395 shares (Direct)

Footnotes (1)

1. F1. Represents a grant of RSUs. The RSUs vest ratably on each of the first, second and third anniversaries of the grant date contingent on the reporting person's continuation in service on each applicable vesting date.

FAQ

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

What did SkyWater Technology (SKYT) President and COO John Sakamoto report on this Form 4?

John Sakamoto reported receiving a grant of 21,221 shares of SkyWater Technology common stock as restricted stock units. The award is compensation-related, carries no purchase price, and vests over three years, contingent on his continued service with the company.

How many SkyWater Technology (SKYT) shares does John Sakamoto hold after this RSU grant?

After the reported RSU grant of 21,221 shares, John Sakamoto directly holds 141,395 shares of SkyWater Technology common stock. This figure reflects his position following the award, according to the Form 4 transaction details provided in the filing.

Was the SkyWater Technology (SKYT) Form 4 transaction a market purchase or sale?

The Form 4 transaction was not a market purchase or sale. It reflects a grant or award acquisition of 21,221 restricted stock units, issued at a price of $0.00 per share as part of compensation, rather than an open-market trade.

How do John Sakamoto’s SkyWater Technology (SKYT) RSUs vest over time?

John Sakamoto’s restricted stock units vest ratably over three years. One-third of the RSUs vest on each of the first, second, and third anniversaries of the grant date, provided he continues in service on each applicable vesting date.

What does the RSU footnote in the SkyWater Technology (SKYT) Form 4 explain?

The footnote explains that the reported shares represent a grant of RSUs, not immediate unrestricted stock. It states the RSUs vest in three equal annual installments, and vesting is contingent on John Sakamoto’s continued service at each vesting date.

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

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Accepted by SEC EDGAR 03/17/2026 - 06:55 PM 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^*

Sakamoto John

(Last) (First) (Middle)

2401 EAST 86TH STREET

(Street)

BLOOMINGTON MN 55425

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
SkyWater Technology, Inc [ SKYT ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
03/15/2026

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	03/15/2026		A(1)		21,221	A	$0	141,395	D

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. Represents a grant of RSUs. The RSUs vest ratably on each of the first, second and third anniversaries of the grant date contingent on the reporting person's continuation in service on each applicable vesting date.

Remarks:

	/s/ Christopher Hilberg, Attorney-in-Fact	03/17/2026
	** 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.