[Form 4] Sidus Space Inc. Insider Trading Activity

Rhea-AI Filing Summary

Jeffrey Shuman, a director of Sidus Space, Inc. (SIDU), reported the vesting and conversion of restricted stock units into Class A common shares. On October 1, 2025 1,715 RSUs vested and were converted into 1,715 shares.

Following the reported transactions, the reporting person beneficially owns 25,538 shares of Class A common stock and holds 5,148 derivative RSUs outstanding. The original grant on August 1, 2025 totaled 15,686 RSUs with a scheduled vesting of 8,823 at grant and subsequent tranches of 1,715 on specified future dates.

Positive

• 1,715 RSUs vested and converted to Class A shares on 10/01/2025
• Reporting person now beneficially owns 25,538 Class A common shares
• Original grant of 15,686 RSUs provides a clear, disclosed vesting schedule

Negative

• None.

Insights

Corporate Governance Analyst

Director vested and converted 1,715 RSUs; now holds 25,538 Class A shares.

The filing shows a routine equity vesting event: 1,715 restricted stock units vested on October 1, 2025 and converted to shares at no cash price. This increases the reporting person’s direct share count to 25,538. The underlying grant was 15,686 RSUs awarded on August 1, 2025, with additional scheduled vesting tranches.

From a governance perspective, the transaction is a non-cash compensation vesting and is disclosed under Section 16 reporting rules; it is informational for shareholders tracking insider ownership and dilution from equity compensation.

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

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

SHUMAN JEFFREY S

(Last) (First) (Middle)

C/O SIDUS SPACE, INC.

150 N. SYKES CREEK PKWY, SUITE 200

(Street)

MERRITT ISLAND, FL 32953

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Sidus Space Inc. [ SIDU ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
10/01/2025

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
Class A Common Stock	10/01/2025		M(1)		1,715	A	$0	25,538	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
Restricted Stock Units	(2)	10/01/2025		M			1,715	(3)	(3)	Class A Common Stock	1,715	$0	5,148	D

Explanation of Responses:

1. Represents the conversion upon vesting of restricted stock units (RSUs) into Class A Common Stock. On August 1, 2025, the reporting person was granted 15,686 RSUs, of which 8,823 vested upon the date of grant and 1,715 vested on October 1, 2025. The vested RSUs which converted on August 1, 2025 are reported in Table II on this Form 4.

2. Each restricted stock unit is the economic equivalent of one share of Sidus Space, Inc.'s Class A Common Stock.

3. On August 1, 2025, the reporting person was granted 15,686 RSUs, of which 8,823 vested upon the date of grant, 1,715 vested on October 1, 2025 and 1,715 vest on each of January 1, 2026, April 1, 2026 and July 1, 2026. The Class A Common Stock into which such vested RSUs converted on August 1, 2025 is reported in Table I on this Form 4.

	/s/ Jeffrey Shuman	10/02/2025
	** 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 insider activity did SIDU file on this Form 4?

The Form 4 reports that director Jeffrey Shuman had 1,715 RSUs vest and convert to 1,715 Class A shares on October 1, 2025.

How many shares does the reporting person own after the transaction (SIDU)?

Following the reported conversion, the reporting person beneficially owns 25,538 shares of Class A common stock.

What was the size and schedule of the RSU grant referenced in the filing?

The filing states an RSU grant of 15,686 units on August 1, 2025: 8,823 vested at grant and additional tranches of 1,715 vesting on 10/01/2025, 01/01/2026, 04/01/2026, and 07/01/2026.

Did the reporting person pay for the shares received on vesting?

The Form 4 shows the price as $0, indicating the RSUs converted into shares without a cash purchase price at vesting.

How many RSU-based derivative units remain after the transaction?

The filing reports 5,148 derivative RSU-based units beneficially owned following the reported transactions.