BlackSky officer files to sell 18,000 shares

BlackSky Technology Inc. officer Christiana Lin has filed a Rule 144 notice to sell up to 18,000 shares of common stock acquired from restricted stock unit vesting.

Rhea-AI Filing Summary

BlackSky Technology Inc. (BKSY) received a notice that officer Christiana Lin plans to sell up to 18,000 shares of common stock under Rule 144 through Morgan Stanley Smith Barney LLC on the NYSE. The shares, valued at an aggregate of $390,060, were acquired upon vesting of restricted stock units.

The RSUs vested during the period from December 6, 2024 through June 10, 2026. In the prior three months, Christiana Lin reported selling 13,052 shares of BlackSky common stock for aggregate proceeds of $273,439.40.

Key Figures

Shares proposed to be sold: 18,000 shares Aggregate market value of proposed sale: $390,060.00 Shares sold in past three months: 13,052 shares +3 more

6 metrics

Shares proposed to be sold 18,000 shares Common stock to be sold under Rule 144 by Christiana Lin

Aggregate market value of proposed sale $390,060.00 Value of 18,000 BlackSky common shares covered by Form 144

Shares sold in past three months 13,052 shares Common stock sold on September 11, 2026 by Christiana Lin

Proceeds from past three months' sale $273,439.40 Aggregate proceeds from 13,052 shares sold on September 11, 2026

RSU vesting period for acquired shares December 6, 2024 through June 10, 2026 Period during which RSUs vested and resulted in the shares to be sold

Date of Notice September 21, 2026 Date the Rule 144 notice was signed by Christiana Lin

Key Terms

Rule 144, Restricted Stock Units, securities to be sold, Executive Financial Services

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 Stock Units financial

"Common | 12/06/2024 | Restricted Stock Units | Issuer"

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.

securities to be sold financial

"The securities to be sold were acquired upon the vesting of restricted stock units"

Executive Financial Services financial

"Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza"

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 Christiana Lin has filed a Rule 144 notice to sell up to 18,000 shares of BlackSky common stock, with an aggregate value of $390,060, through Morgan Stanley Smith Barney LLC on the NYSE.

How many BKSY shares does Christiana Lin plan to sell under this Form 144?

Christiana Lin plans to sell up to 18,000 shares of BlackSky Technology Inc. common stock. These shares are to be sold through Morgan Stanley Smith Barney LLC Executive Financial Services on the NYSE, as stated in the Form 144 notice.

What is the approximate aggregate value of the BlackSky (BKSY) shares covered by this Form 144?

The Form 144 reports an aggregate market value of $390,060.00 for the 18,000 shares of BlackSky common stock proposed to be sold by Christiana Lin through Morgan Stanley Smith Barney LLC.

How were the BKSY shares to be sold by Christiana Lin acquired?

The shares to be sold were acquired upon the vesting of restricted stock units. The filing states that these RSUs vested during the period from December 6, 2024 through June 10, 2026 and were issued by BlackSky Technology Inc. as the issuer.

What BlackSky (BKSY) stock sales has Christiana Lin made in the past three months?

Over the past three months, Christiana Lin reported selling 13,052 shares of BlackSky common stock on September 11, 2026 for aggregate proceeds of $273,439.40, according to the Form 144 disclosure of prior sales.

Who is the broker for the planned BlackSky (BKSY) share sale under this Form 144?

The broker listed for the planned sale is Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, New York, NY. The filing notes that the shares are to be sold on the NYSE.

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

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Available on EDGAR 09/21/2026 - 04:31 PM Accepted by SEC EDGAR 09/21/2026 - 04:30 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	0001400954
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	7039351930
Name of Person for Whose Account the Securities are To Be Sold	CHRISTIANA LIN
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
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	18000	390060.00	40924846	09/21/2026	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 *
Common	12/06/2024	Restricted Stock Units	Issuer			18000	12/06/2024	N/A

* 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
CHRISTIANA LIN 2411 Dulles Corner Park Suite 300 Herndon VA 20171	Common	09/11/2026	13052	273439.40

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the vesting of restricted stock units during the period of 12/06/2024 through 06/10/2026.
Date of Notice	09/21/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	06/10/2026
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/ Christiana Lin
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)