HawkEye 360 CLO sells 26,506 shares at ~$16

HawkEye 360’s chief legal officer reported pre-planned sales totaling 26,506 shares, including a mandatory sell-to-cover tax transaction tied to RSU vesting.

Rhea-AI Filing Summary

HawkEye 360, Inc. (HAWK) reported that Chief Legal Officer Michael S. Turner sold a total of 26,506 shares of common stock in two transactions on September 15 and 16, 2026. The filing affirms that the sales were made under a Rule 10b5-1 trading plan adopted on May 21, 2026.

On September 15, 2026, he sold 8,250 shares at a weighted average price of $16.2888 per share, in multiple trades between $16.06 and $16.51. On September 16, 2026, he sold 18,256 shares at a weighted average price of $16.2368 per share, in multiple trades between $16.02 and $16.52. One of the reported sales represents shares sold to cover tax withholding obligations arising from the vesting and settlement of RSUs and is described as a mandatory, non-discretionary "sell to cover" transaction under the issuer’s election.

Insider Trade Summary 10b5-1

Net Seller: 26,506 shares

Net Sell 2 txns

Insider Turner Michael S.

Role Chief Legal Officer

Sold 26,506 shs ($431K)

Type	Security	Shares	Price	Value
Sale	Common Stock F3, F4	18,256	$16.2368	$296K
Sale	Common Stock F1, F2	8,250	$16.2888	$134K

Holdings After Transaction: Common Stock — 179,521 shares (Direct)

Footnotes (4)

1. F1. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.
2. F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.06 to $16.51 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold each separate price within the range set forth in this footnote.
3. F3. Represents shares sold pursuant to a Rule 10b5-1 Plan adopted on May 21, 2026.
4. F4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.02 to $16.52 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold each separate price within the range set forth in this footnote.

Key Figures

Total shares sold: 26,506 shares Shares sold on September 15, 2026: 8,250 shares Weighted average price on September 15, 2026: $16.2888 per share +3 more

6 metrics

Total shares sold 26,506 shares Aggregate insider sales reported for September 15–16, 2026

Shares sold on September 15, 2026 8,250 shares Common stock sale by Chief Legal Officer

Weighted average price on September 15, 2026 $16.2888 per share Trades executed between $16.06 and $16.51

Shares sold on September 16, 2026 18,256 shares Common stock sale by Chief Legal Officer

Weighted average price on September 16, 2026 $16.2368 per share Trades executed between $16.02 and $16.52

Rule 10b5-1 plan adoption date May 21, 2026 Plan cited as governing at least one of the reported sales

Key Terms

Rule 10b5-1 Plan, sell to cover, RSUs, weighted average price

4 terms

Rule 10b5-1 Plan regulatory

"Represents shares sold pursuant to a Rule 10b5-1 Plan adopted on May 21, 2026"

A Rule 10b5-1 plan is a prearranged, written schedule that lets corporate insiders buy or sell company stock at set times or amounts, even if they later learn material nonpublic information. Think of it like setting an automatic thermostat for trades: it creates a clear record that trades were planned in advance, reducing the risk of insider-trading accusations and helping investors trust that insider transactions are routine rather than based on secret information.

sell to cover financial

"tax withholding obligations to be funded by a "sell to cover" transaction"

Sell to cover is when a person who receives company stock through options or awards sells just enough shares immediately to pay required taxes, exercise costs, or fees, keeping the rest. Think of it like cashing part of a bonus to cover the tax bill so you can keep the remainder. For investors, it can create predictable small selling pressure and slightly change the number of shares actually held by insiders without increasing long‑term dilution.

RSUs financial

"in connection with the vesting and settlement of RSUs"

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.

weighted average price financial

"The price reported in Column 4 is a weighted average price"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

FAQ

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

What insider transactions did HAWK report for Michael S. Turner on this Form 4?

The Form 4 reports that Chief Legal Officer Michael S. Turner sold 26,506 shares of HawkEye 360 common stock in two transactions on September 15 and 16, 2026.

How many HAWK shares were sold on each date and at what prices?

On September 15, 2026, 8,250 shares were sold at a weighted average price of $16.2888. On September 16, 2026, 18,256 shares were sold at a weighted average price of $16.2368.

Were the HAWK share sales by Michael S. Turner under a Rule 10b5-1 plan?

Yes. The filing indicates the transactions were made under a Rule 10b5-1 Plan adopted on May 21, 2026, with a footnote explicitly stating that the September 16, 2026 sale was pursuant to this plan.

Did any of Michael S. Turner’s HAWK sales relate to RSU tax withholding?

Yes. One sale represents shares sold to cover tax withholding obligations from the vesting and settlement of RSUs and is described as a mandatory, non-discretionary "sell to cover" transaction under the issuer’s election.

How were the reported HAWK sale prices determined on this Form 4?

For both dates, the reported prices are weighted average prices. The September 15 sales occurred between $16.06 and $16.51, and the September 16 sales occurred between $16.02 and $16.52, with full trade breakdowns available on request.

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

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Available on EDGAR 09/17/2026 - 04:27 PM Accepted by SEC EDGAR 09/17/2026 - 04:26 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^*

Turner Michael S.

(Last) (First) (Middle)

C/O HAWKEYE 360, INC.

450 SPRINGPARK PLACE, SUITE 500

(Street)

HERNDON VIRGINIA 20170

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
HawkEye 360, Inc. [ HAWK ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Legal Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/15/2026

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
Common Stock	09/15/2026		S(1)		8,250	D	$16.2888(2)	197,777	D
Common Stock	09/16/2026		S(3)		18,256	D	$16.2368(4)	179,521	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. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.06 to $16.51 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold each separate price within the range set forth in this footnote.

3. Represents shares sold pursuant to a Rule 10b5-1 Plan adopted on May 21, 2026.

4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.02 to $16.52 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold each separate price within the range set forth in this footnote.

	/s/ Michael S. Turner	09/17/2026
	** 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)