BlackSky CFO sells 4,000 shares at $23.78 avg

Rhea-AI Filing Summary

BlackSky Technology Inc. (BKSY) reported an insider transaction by Chief Financial Officer Henry Edward Dubois. On 2026-08-28, he sold 4,000 shares of Class A Common Stock in an open-market transaction under a Rule 10b5-1 trading plan adopted in May 2026, at a weighted average price of $23.78 per share across trades ranging from $23.47 to $24.33. Following this sale, he directly held 498,156 shares, a portion of which are restricted stock units (RSUs), each representing a contingent right to receive one share of Class A Common Stock subject to vesting conditions.

Insider Trade Summary 10b5-1

Net Seller: 4,000 shares

Net Sell 1 txn

Insider Dubois Henry Edward

Role Chief Financial Officer

Sold 4,000 shs ($95K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock F1, F2, F3	4,000	$23.78	$95K

Holdings After Transaction: Class A Common Stock — 498,156 shares (Direct)

Footnotes (3)

1. F1. This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted by the reporting person in May 2026.
2. F2. This transaction was executed in multiple trades at prices ranging from $23.47 to $24.33. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was effected.
3. F3. Certain of these securities are RSUs. Each RSU represents a contingent right to receive one share of Class A Common Stock, subject to the applicable vesting schedule and conditions of each RSU.

Key Figures

Shares sold: 4,000 shares of Class A Common Stock Weighted average sale price: $23.78 per share Sale price range: $23.47 to $24.33 per share +2 more

5 metrics

Shares sold 4,000 shares of Class A Common Stock Sale on 2026-08-28 by CFO Henry Edward Dubois

Weighted average sale price $23.78 per share Weighted average for trades executed on 2026-08-28

Sale price range $23.47 to $24.33 per share Multiple trades comprising the 4,000-share sale

Shares owned after transaction 498,156 shares Direct holdings of the CFO following the sale

Rule 10b5-1 trading plan adoption date May 2026 Plan under which the 4,000-share sale was executed

Key Terms

Rule 10b5-1 trading plan, weighted average sale price, restricted stock units (RSUs), contingent right

4 terms

Rule 10b5-1 trading plan regulatory

"This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average sale price financial

"The price reported above reflects the weighted average sale price."

restricted stock units (RSUs) financial

"Certain of these securities are RSUs. Each RSU represents a contingent right"

Restricted stock units (RSUs) are a type of company promise to give employees shares of stock in the future, usually after certain conditions like working for a set time. They are like a gift promised today that you receive later, which can become valuable if the company's stock price goes up. RSUs matter because they are a way companies reward employees and can be a significant part of compensation.

contingent right financial

"Each RSU represents a contingent right to receive one share"

FAQ

What insider transaction did BKSY disclose for CFO Henry Edward Dubois?

BKSY disclosed that CFO Henry Edward Dubois sold 4,000 shares of Class A Common Stock on 2026-08-28 in an open-market transaction under a Rule 10b5-1 trading plan.

At what price did the BKSY CFO sell shares in this Form 4 filing?

The CFO’s sale was executed in multiple trades between $23.47 and $24.33 per share. The Form 4 reports a weighted average sale price of $23.78 per share for the 4,000 shares.

How many BKSY shares does the CFO hold after the reported sale?

After the reported sale, CFO Henry Edward Dubois directly holds 498,156 shares of BlackSky Technology Inc. Class A Common Stock, including certain shares that are restricted stock units (RSUs) subject to vesting.

Was the BKSY CFO’s share sale under a Rule 10b5-1 trading plan?

Yes. The filing states the transaction was executed pursuant to a Rule 10b5-1 trading plan adopted by the reporting person in May 2026, and the Form 4’s 10b5-1 checkbox is marked true.

What does the Form 4 say about RSUs held by the BKSY CFO?

The Form 4 notes that certain of the reported securities are RSUs. Each RSU represents a contingent right to receive one share of Class A Common Stock, subject to the applicable vesting schedule and conditions.

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Available on EDGAR 08/31/2026 - 06:00 PM Accepted by SEC EDGAR 08/31/2026 - 05:59 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).

X

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^*

Dubois Henry Edward

(Last) (First) (Middle)

C/O BLACKSKY TECHNOLOGY INC.,

2411 DULLES CORNER PARK, SUITE 300

(Street)

HERNDON VIRGINIA 20171

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
BlackSky Technology Inc. [ BKSY ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/28/2026

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	08/28/2026		S(1)		4,000	D	$23.78(2)	498,156(3)	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. This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted by the reporting person in May 2026.

2. This transaction was executed in multiple trades at prices ranging from $23.47 to $24.33. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was effected.

3. Certain of these securities are RSUs. Each RSU represents a contingent right to receive one share of Class A Common Stock, subject to the applicable vesting schedule and conditions of each RSU.

Remarks:

	/s/ Christiana L. Lin, attorney-in-fact on behalf of Henry Dubois	08/31/2026
	** 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)