Michael S. Turner - 15 Sep 2026 Form 4 Insider Report for HawkEye 360, Inc. (HAWK)

Reporting relationship: Chief Legal Officer
Issuer ticker: HAWK
Reported as of: 15 Sep 2026
Net transaction value: -$430,802
SEC form: 4
Accepted by SEC: 17 Sep 2026, 16:26:54 UTC
Prior SEC filing: 06 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Michael S. Turner

Key filing fact

Michael S. Turner filed Form 4 for HawkEye 360, Inc. (HAWK) on 17 Sep 2026.

Key facts

This page summarizes Michael S. Turner's Form 4 filing for HawkEye 360, Inc. (HAWK).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 17 Sep 2026, 16:26.

Change

Previous filing in this sequence was filed on 06 May 2026.
Current net transaction value: -$430,802.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001836524 Primary reporting owner

Turner Michael S.

Relationship: Chief Legal Officer
Address: C/O HAWKEYE 360, INC., 450 SPRINGPARK PLACE, SUITE 500, HERNDON
Signature: /s/ Michael S. Turner
Signature date: 17 Sep 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

HAWK transaction

Common Stock

Sale

Transaction value: $134,383
Shares: -8,250
Change %: -4%
Price: $16.29
Shares after: 197,777
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F1, F2

HAWK transaction

Common Stock

Sale

Transaction value: $296,419
Shares: -18,256
Change %: -9.2%
Price: $16.24
Shares after: 179,521
Date: 16 Sep 2026
Ownership: Direct
Footnotes: F3, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 4 footnotes

Footnote 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.

Footnote 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.

Footnote F3

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

Footnote 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.