[Form 4] Sidus Space Inc. Insider Trading Activity

Rhea-AI Filing Summary

Sidus Space insider Dana S. Kilborne, a director, reported receipt of 735 shares of Class A Common Stock on 10/01/2025 following the vesting and conversion of restricted stock units (RSUs). The Form 4 shows 735 shares acquired at a reported price of $0, increasing the reporting persons beneficial ownership to 8,690 shares of Class A Common Stock. The filing explains that on 8/01/2025 the reporting person was granted 10,896 RSUs, of which 7,955 vested immediately, 735 vested on 10/01/2025, and additional tranches of 735 are scheduled to vest on 1/01/2026, 4/01/2026, and 7/01/2026.

Positive

• 735 RSUs vested and converted to Class A shares on 10/01/2025, reflecting scheduled compensation
• Original grant of 10,896 RSUs on 8/01/2025 includes multiple future vesting tranches through 7/01/2026

Negative

• None.

Insights

Corporate Governance Analyst

Director RSUs vested and converted into 735 Class A shares on 10/01/2025.

The Form 4 documents routine equity compensation mechanics: 10,896 RSUs were granted on 8/01/2025, with 7,955 vesting at grant and subsequent scheduled vesting tranches including the 735 that vested and converted on 10/01/2025.

This filing reports the post-transaction beneficial ownership as 8,690 Class A shares and shows the shares were converted at a reported price of $0, consistent with standard RSU-to-share conversions rather than an open-market purchase.

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

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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^*

Kilborne Dana 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)		735	A	$0	8,690	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			735	(3)	(3)	Class A Common Stock	735	$0	2,206	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 10,896 RSUs, of which 7,955 vested upon the date of grant and 735 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 10,896 RSUs, of which 7,955 vested upon the date of grant, 735 vested on October 1, 2025 and 735 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/ Dana Kilborne	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 transaction did Dana S. Kilborne report on Form 4 for SIDU?

The Form 4 reports the vesting and conversion of 735 RSUs into 735 shares of Class A Common Stock on 10/01/2025.

How many RSUs were granted to the reporting person and when?

The reporting person was granted 10,896 RSUs on 8/01/2025.

What is the reporting persons beneficial ownership after the transaction?

Following the reported transaction, beneficial ownership is reported as 8,690 shares of Class A Common Stock.

Were any shares purchased for cash in this transaction?

No cash purchase was reported; the conversion lists a price of $0, indicating vested RSUs converted to shares.

Are there additional vesting dates disclosed for remaining RSUs?

Yes. Additional tranches of 735 RSUs are scheduled to vest on 1/01/2026, 4/01/2026, and 7/01/2026.