BlackSky CFO sells 4,000 shares at $22.97

BlackSky’s CFO sold 4,000 BKSY shares under a pre-arranged Rule 10b5-1 plan and continues to hold 478,931 shares, including RSUs.

Rhea-AI Filing Summary

BlackSky Technology Inc. (BKSY) reported that its Chief Financial Officer, Henry Edward Dubois, sold 4,000 shares of Class A Common Stock on September 21, 2026 at a weighted average price of $22.97 per share. The sale was executed under a Rule 10b5-1 trading plan adopted in May 2026. Following this transaction, Dubois directly holds 478,931 shares, including Restricted Stock Units that vest subject to their applicable 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 ($92K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock F1, F2, F3	4,000	$22.97	$92K

Holdings After Transaction: Class A Common Stock — 478,931 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 $22.37 to $23.30. 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 Weighted average sale price: $22.97 per share Trade price range: $22.37–$23.30 per share +1 more

4 metrics

Shares sold 4,000 shares Class A Common Stock sold by the CFO on September 21, 2026

Weighted average sale price $22.97 per share Average price for the 4,000 shares sold on September 21, 2026

Trade price range $22.37–$23.30 per share Range of individual trade prices within the reported sale

Shares held after transaction 478,931 shares Direct holdings of the CFO following the September 21, 2026 sale, including RSUs

Key Terms

Rule 10b5-1 trading plan, weighted average sale price, RSUs, contingent right

4 terms

Rule 10b5-1 trading plan regulatory

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

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"

RSUs financial

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

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.

contingent right financial

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

FAQ

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

What insider transaction did BlackSky Technology Inc. (BKSY) disclose for its CFO?

BlackSky disclosed that CFO Henry Edward Dubois sold 4,000 shares of Class A Common Stock on September 21, 2026 in a reported sale transaction.

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

The CFO’s sale was executed at a weighted average price of $22.97 per share, with individual trade prices ranging from $22.37 to $23.30, as disclosed in the transaction footnote.

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

After the sale, CFO Henry Edward Dubois directly holds 478,931 shares of BlackSky Class A Common Stock, which includes Restricted Stock Units (RSUs) that are subject to vesting schedules and conditions.

Was the BKSY CFO’s share sale made 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 plan-status checkbox for Rule 10b5-1 is affirmed.

How many BKSY shares did the CFO sell in total according to this Form 4?

The Form 4 reports that CFO Henry Edward Dubois sold a total of 4,000 shares of BlackSky Class A Common Stock in this transaction, categorized as a sale in open market or private transaction.

Does the Form 4 indicate multiple trade prices for the BKSY CFO sale?

Yes. A footnote explains the sale occurred in multiple trades at prices ranging from $22.37 to $23.30, and that the reported $22.97 figure is the weighted average sale price.

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

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Available on EDGAR 09/22/2026 - 05:39 PM Accepted by SEC EDGAR 09/22/2026 - 05:39 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)
09/21/2026

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	09/21/2026		S		4,000(1)	D	$22.97(2)	478,931(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 $22.37 to $23.30. 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	09/23/2026
	** 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)