Sidus Space director awarded 21,990 RSUs

Sidus Space Inc. director Leonardo Riera reported equity-based compensation and a related share issuance.

Rhea-AI Filing Summary

Sidus Space Inc. director Leonardo Riera reported equity-based compensation and a related share issuance. On July 1, 2026, he was granted 21,990 restricted stock units (RSUs), each equal to one share of Class A Common Stock. Of this grant, 4,749 RSUs vested immediately and converted into 4,749 Class A shares at no cash cost, bringing his direct Class A Common Stock holdings to 13,916 shares after the transaction. The remaining 17,241 RSUs are scheduled to vest on June 30, 2027, providing additional potential future equity if vesting conditions are met.

Insider Trade Summary

4,749 shares exercised/converted

Exercise 3 txns

Insider Riera Leonardo

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	21,990	$0.00	$0.00
Exercise	Restricted Stock Units	4,749	$0.00	$0.00
Exercise	Class A Common Stock	4,749	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 17,241 contracts (Direct); Class A Common Stock — 13,916 shares (Direct)

Footnotes (3)

1. F1. Represents the conversion upon vesting of restricted stock units (RSUs) into Class A Common Stock. On July 1, 2026, the reporting person was granted 21,990 RSUs, of which 4,749 vested upon the date of grant and 17,241 vest on June 30, 2027. The vested RSUs which converted on July 1, 2026 are reported in Table II on this Form 4.
2. F2. Each restricted stock unit is the economic equivalent of one share of Sidus Space, Inc.'s Class A Common Stock.
3. F3. On July 1, 2026, the reporting person was granted 21,990 RSUs, of which 4,749 vested upon the date of grant and 17,241 vest on June 30, 2027. The vested RSUs which converted on July 1, 2026 are reported in Table II on this Form 4.

Key Figures

RSUs granted: 21,990 RSUs RSUs vested and converted: 4,749 shares Unvested RSUs: 17,241 RSUs +2 more

5 metrics

RSUs granted 21,990 RSUs Equity grant to Leonardo Riera on July 1, 2026

RSUs vested and converted 4,749 shares RSUs converted into Class A Common Stock on July 1, 2026

Unvested RSUs 17,241 RSUs Scheduled to vest on June 30, 2027

Shares held after transaction 13,916 shares Direct Class A Common Stock holdings after July 1, 2026

RSU share equivalence 1 RSU = 1 share Each restricted stock unit equals one Class A share

Key Terms

restricted stock units, RSUs, economic equivalent, Class A Common Stock

4 terms

restricted stock units financial

"On July 1, 2026, the reporting person was granted 21,990 RSUs, of which 4,749 vested"

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

"Represents the conversion upon vesting of restricted stock units (RSUs) into Class A 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.

economic equivalent financial

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

Class A Common Stock financial

"Represents the conversion upon vesting of restricted stock units (RSUs) into Class A Common Stock."

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

FAQ

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

What did Sidus Space (SIDU) director Leonardo Riera report in this Form 4?

Leonardo Riera reported an equity compensation grant and related share issuance. He received 21,990 restricted stock units, with 4,749 RSUs vesting and converting into Class A Common Stock, and the remainder scheduled to vest later, increasing his overall equity exposure.

How many Sidus Space RSUs were granted to Leonardo Riera on July 1, 2026?

Riera was granted 21,990 restricted stock units on July 1, 2026. According to the filing, these RSUs are each economically equivalent to one share of Sidus Space’s Class A Common Stock, representing a significant component of his equity-based compensation package.

How many Sidus Space shares did Leonardo Riera receive from vested RSUs?

From the July 1, 2026 grant, 4,749 RSUs vested immediately and converted into 4,749 shares of Class A Common Stock. This conversion occurred at a stated price of $0.00 per share, reflecting compensation rather than an open-market purchase of stock.

What are Leonardo Riera’s Sidus Space share holdings after this Form 4 transaction?

After the July 1, 2026 transactions, Riera directly holds 13,916 shares of Sidus Space Class A Common Stock. In addition, he has unvested RSUs that can convert into further shares in the future if vesting conditions are satisfied as scheduled.

When will the remaining Sidus Space RSUs granted to Leonardo Riera vest?

Of the 21,990 RSUs granted, 17,241 are scheduled to vest on June 30, 2027. Upon vesting, each restricted stock unit is expected to convert into one share of Class A Common Stock, subject to the grant’s terms and any applicable service or performance conditions.

Does this Sidus Space Form 4 show any stock sales by Leonardo Riera?

The Form 4 does not show any stock sales by Riera. All reported transactions are coded as M and A, indicating derivative exercises and grants. These reflect equity compensation events rather than open-market purchases or dispositions of Sidus Space shares.

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

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Accepted by SEC EDGAR 07/06/2026 - 06:15 AM 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
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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^*

Riera Leonardo

(Last) (First) (Middle)

C/O SIDUS SPACE, INC.

150 N. SYKES CREEK PKWY, SUITE 200

(Street)

MERRITT ISLAND, FLORIDA 32953

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/01/2026

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
Class A Common Stock	07/01/2026		M(1)		4,749	A	$0	13,916	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)	07/01/2026		A		21,990		(3)	(3)	Class A Common Stock	21,990	$0	21,990	D
Restricted Stock Units	(2)	07/01/2026		M			4,749	(3)	(3)	Class A Common Stock	4,749	$0	17,241	D

Explanation of Responses:

1. Represents the conversion upon vesting of restricted stock units (RSUs) into Class A Common Stock. On July 1, 2026, the reporting person was granted 21,990 RSUs, of which 4,749 vested upon the date of grant and 17,241 vest on June 30, 2027. The vested RSUs which converted on July 1, 2026 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 July 1, 2026, the reporting person was granted 21,990 RSUs, of which 4,749 vested upon the date of grant and 17,241 vest on June 30, 2027. The vested RSUs which converted on July 1, 2026 are reported in Table II on this Form 4.

	/s/ Leonardo Riera	07/06/2026
	** 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.
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* Form 4: SEC 1474 (03-26)