Jesung Kim - 22 Sep 2026 Form 4 Insider Report for Firefly Aerospace Inc. (FLY)

Reporting relationship: Chief Executive Officer, Director
Issuer ticker: FLY
Reported as of: 22 Sep 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 23 Sep 2026, 17:13:10 UTC
Prior SEC filing: 18 Sep 2026
Source filing: View source filing
Reporting owner signature: /s/ Nathan O'Konek, Attorney-in-fact

Key filing fact

Jesung Kim filed Form 4 for Firefly Aerospace Inc. (FLY) on 23 Sep 2026.

Key facts

This page summarizes Jesung Kim's Form 4 filing for Firefly Aerospace Inc. (FLY).
2 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 23 Sep 2026, 17:13.

Change

Previous filing in this sequence was filed on 18 Sep 2026.
Current net transaction value: $0.

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 0002078068 Primary reporting owner

Kim Jesung

Relationship: Chief Executive Officer, Director
Address: C/O FIREFLY AEROSPACE INC., 2203 SCOTTSDALE DRIVE, LEANDER
Signature: /s/ Nathan O'Konek, Attorney-in-fact
Signature date: 23 Sep 2026

Reported non-derivative transactions

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

FLY transaction

Common Stock

Options Exercise

Transaction value
Shares: +43,278
Change %: +5.1%
Price: $2.31^*
Shares after: 898,738
Date: 22 Sep 2026
Ownership: Direct

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

FLY transaction Derivative

Employee Stock Option (right to buy)

Options Exercise

Transaction value
Shares: -43,278
Change %: -6.9%
Price: $0.000000^*
Shares after: 588,462
Date: 22 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 43,278
Exercise price: $2.31
Footnotes: F1

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

All of the shares subject to the option are fully vested and exercisable as of the date hereof.

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