BlackSky officer plans $1.17M stock sale

BlackSky Technology Inc. officer Brian O'Toole filed a Rule 144 notice to sell 56,497 Class A shares mainly to cover tax liabilities from vesting RSUs.

Rhea-AI Filing Summary

BlackSky Technology Inc. (BKSY) officer Brian O'Toole filed a notice of proposed sales of Class A Common Stock under Rule 144. The filing covers the potential sale of 56,497 shares through Morgan Stanley Smith Barney LLC, with an indicated aggregate market value of $1,172,312 and a planned sale date of September 11, 2026 on the NYSE.

The shares relate to 118,994 shares acquired from restricted share units vesting on September 10, 2026. In the prior three months, O'Toole reported sales of 15,512 shares for $528,959 on June 10, 2026 and 20,000 shares for $436,600 on September 9, 2026. The notice states the sales are pursuant to an issuer-implemented, non-discretionary sell-to-cover arrangement to satisfy income tax liabilities from RSU vesting, unless those taxes are paid in cash.

Key Figures

Shares proposed to be sold: 56,497 shares Aggregate market value of proposed sale: $1,172,312 RSU shares acquired: 118,994 shares +3 more

6 metrics

Shares proposed to be sold 56,497 shares Class A Common Stock proposed sale under Rule 144

Aggregate market value of proposed sale $1,172,312 Value associated with 56,497 shares of Class A Common Stock

RSU shares acquired 118,994 shares Shares acquired on September 10, 2026 from restricted share units vesting

Recent sale on June 10, 2026 15,512 shares for $528,959 Class A Common Stock sold during prior three months

Recent sale on September 9, 2026 20,000 shares for $436,600 Class A Common Stock sold during prior three months

Planned sale date September 11, 2026 Approximate date of proposed Rule 144 sale on NYSE

Key Terms

Rule 144, restricted share unit, sell-to-cover arrangement, equity compensation

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

restricted share unit financial

"Restricted Share Units Vesting - See Remarks."

A restricted share unit (RSU) is a promise by a company to give an employee a set number of company shares at a future date, typically after meeting time or performance conditions. For investors, RSUs matter because when they convert into actual shares they increase the number of shares outstanding (like unlocking more tickets in a game), which can dilute existing holders, and they align employee incentives with company performance, influencing behavior and long-term value.

sell-to-cover arrangement financial

"pursuant to an Issuer-implemented, non-discretionary sell-to-cover arrangement"

equity compensation financial

"09/10/2026 | Equity Compensation"

Equity compensation is pay given to employees, executives or contractors in the form of company ownership—such as stock, stock options or restricted shares—rather than just cash. It matters to investors because it can align workers' incentives with shareholders (like paying someone in slices of the same pie they help grow), but it also increases the number of shares outstanding and company expenses, affecting ownership percentages and earnings per share.

FAQ

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

What does the Form 144 filing disclose for BlackSky Technology Inc. (BKSY)?

It discloses that officer Brian O'Toole plans to sell 56,497 shares of BlackSky Class A Common Stock under Rule 144, through Morgan Stanley Smith Barney LLC, with a planned sale date of September 11, 2026 on the NYSE.

How many BlackSky (BKSY) shares is Brian O'Toole proposing to sell?

Brian O'Toole is proposing to sell 56,497 shares of BlackSky Technology Inc. Class A Common Stock. The filing lists an aggregate market value of $1,172,312 for these proposed sales, with trading expected on the NYSE.

What is the source of the BlackSky (BKSY) shares covered by this Form 144?

The Form 144 states the shares come from restricted share units vesting. It reports 118,994 shares acquired on September 10, 2026 via RSU vesting and indicates these are equity compensation–related shares.

How were recent BlackSky (BKSY) insider sales by Brian O'Toole described?

The filing reports that O'Toole sold Class A Common Stock under an issuer-implemented, non-discretionary sell-to-cover arrangement, solely to satisfy income tax liabilities from RSU vesting, unless he elects to pay those taxes in cash instead.

What BlackSky (BKSY) stock sales has Brian O'Toole made in the past three months?

He reported selling 15,512 shares for $528,959 on June 10, 2026, and 20,000 shares for $436,600 on September 9, 2026. Both transactions involved BlackSky Class A Common Stock.

What does the Form 144 say about the purpose of Brian O'Toole’s BlackSky (BKSY) stock sales?

The notice states the securities were sold under an issuer-implemented, non-discretionary sell-to-cover arrangement to satisfy income tax liabilities from vesting RSUs, unless those tax liabilities are instead paid in cash.

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

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 09/10/2026 - 08:12 PM Accepted by SEC EDGAR 09/10/2026 - 08:12 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001443092
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	BlackSky Technology Inc.
SEC File Number	001-39113
Address of Issuer	2411 Dulles Corner Park Suite 300 Herndon VIRGINIA 20171
Phone	5712307163
Name of Person for Whose Account the Securities are To Be Sold	Brian O'Toole
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Class A Common Stock	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza, 8th Floor New York NY 10004	56497	1172312	1063179	09/11/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Class A Common Stock	09/10/2026	Restricted Share Units Vesting - See Remarks.	Issuer			118994	09/10/2026	Equity Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Brian O'Toole 2411 Dulles Corner Park Suite 300 Herndon VA 20171	Class A Common Stock	06/10/2026	15512	528959
Brian O'Toole 2411 Dulles Corner Park Suite 300 Herndon VA 20171	Class A Common Stock	09/09/2026	20000	436600

144: Remarks and Signature

Remarks	The reporting person sold the securities reported herein pursuant to an Issuer-implemented, non-discretionary sell-to-cover arrangement for the purposes of satisfying income tax liabilities incurred upon vesting of restricted share unit awards only, unless the reporting person elects to pay such tax liabilities in cash.
Date of Notice	09/10/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Brian O'Toole
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)