William D. Porteous - 10 Dec 2025 Form 4 Insider Report for BlackSky Technology Inc. (BKSY)

Role: Director
Signature: /s/ Christiana L. Lin, attorney-in-fact on behalf of William D. Porteous
Issuer symbol: BKSY
Transactions as of: 10 Dec 2025
Transactions value $: $0
Form type: 4
Filing time: 10 Dec 2025, 16:06:00 UTC
Previous filing: 01 Oct 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Porteous William D.	Director	C/O BLACKSKY TECHNOLOGY INC.,, 2411 DULLES CORNER PARK, SUITE 300, HERNDON	/s/ Christiana L. Lin, attorney-in-fact on behalf of William D. Porteous	10 Dec 2025	0001865965

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BKSY	Class A Common Stock	Award	$0	+1.5K	+2.02%	$0.00	75.7K	10 Dec 2025	Direct	F1
holding	BKSY	Class A Common Stock						720K	10 Dec 2025	See footnote	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	These securities are restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock. These RSUs are awarded in connection with a review conducted by the Company's Compensation Committee of Outside Director Compensation and will vest in full upon the earlier of (i) September 11, 2026 or (ii) the date of the next Annual Meeting following the Transaction Date, subject to the Outside Director remaining a Service Provider through such vesting date.
F2	These shares are held by RRE Ventures IV, L.P. ("Ventures IV"). The general partner of Ventures IV is RRE Ventures GP VI, LLC ("GP VI"). The managing members and officers of GP VI are James D. Robinson IV, Stuart J. Ellman, and William D. Porteous. Each of GP VI and Messrs. Robinson IV, Ellman, and Porteous disclaim beneficial ownership of the securities reported on this Form 4, except to the extent of its or his pecuniary interest therein, if any.

Content

These securities are restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock. These RSUs are awarded in connection with a review conducted by the Company's Compensation Committee of Outside Director Compensation and will vest in full upon the earlier of (i) September 11, 2026 or (ii) the date of the next Annual Meeting following the Transaction Date, subject to the Outside Director remaining a Service Provider through such vesting date.

These shares are held by RRE Ventures IV, L.P. ("Ventures IV"). The general partner of Ventures IV is RRE Ventures GP VI, LLC ("GP VI"). The managing members and officers of GP VI are James D. Robinson IV, Stuart J. Ellman, and William D. Porteous. Each of GP VI and Messrs. Robinson IV, Ellman, and Porteous disclaim beneficial ownership of the securities reported on this Form 4, except to the extent of its or his pecuniary interest therein, if any.