HawkEye 360's Serafini proposes $1.39M share sale

The shares are described as acquired from HawkEye 360 through exercise of stock options; Morgan Stanley Smith Barney LLC and NYSE appear in the sale details.

Rhea-AI Filing Summary

HawkEye 360, Inc. (HAWK) director and officer John Serafini filed a notice proposing the sale of 92,329 common shares, with an aggregate market value of $1,394,167.90. The proposed sale date is October 1, 2026. The notice lists 97,965,552 shares outstanding.

Key Figures

Proposed shares for sale: 92,329 shares Aggregate market value: $1,394,167.90 Shares outstanding: 97,965,552 shares

3 metrics

Proposed shares for sale 92,329 shares Common shares; proposed sale date October 1, 2026

Aggregate market value $1,394,167.90 For the proposed sale

Shares outstanding 97,965,552 shares HawkEye 360 shares outstanding

Key Terms

Rule 144, Exercise of Stock Options, Securities To Be Sold

3 terms

Rule 144 regulatory

"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.

Exercise of Stock Options financial

"Exercise of Stock Options"

Securities To Be Sold regulatory

"144: Securities To Be Sold"

FAQ

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

Which broker and exchange are listed for John Serafini's HAWK sale?

Morgan Stanley Smith Barney LLC is listed in the broker field, and NYSE is listed as the exchange.

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 10/01/2026 - 04:24 PM Accepted by SEC EDGAR 10/01/2026 - 04:24 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	0002127288
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	HawkEye 360, Inc.
SEC File Number	001-43266
Address of Issuer	450 Springpark Place, Suite 500 Herndon VIRGINIA 20170
Phone	(571)203-0360
Name of Person for Whose Account the Securities are To Be Sold	JOHN SERAFINI
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	Director
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	92329	1394167.90	97965552	10/01/2026	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	10/01/2026	Exercise of Stock Options	Issuer			92329	10/01/2026	Cash

* 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

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	10/01/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/21/2026
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/ John Serafini
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)