AEROEQUITY GP, LLC - 08 Jul 2026 Form 4 Insider Report for York Space Systems Inc. (YSS)

Reporting relationship: 10%+ Owner
Issuer ticker: YSS
Reported as of: 08 Jul 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 10 Jul 2026, 16:05:18 UTC
Prior SEC filing: 29 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Matt Friendly, by Power of Attorney

Key filing fact

AEROEQUITY GP, LLC filed Form 4 for York Space Systems Inc. (YSS) on 10 Jul 2026.

Key facts

This page summarizes AEROEQUITY GP, LLC's Form 4 filing for York Space Systems Inc. (YSS).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 10 Jul 2026, 16:05.

Change

Previous filing in this sequence was filed on 29 Jun 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 (3)

CIK 0001880792 Primary reporting owner

AEROEQUITY GP, LLC

Relationship: 10%+ Owner
Address: C/O AE INDUSTRIAL PARTNERS, LP, 6700 BROKEN SOUND PKWY NW, BOCA RATON
Signature: /s/ Matt Friendly, by Power of Attorney
Signature date: 10 Jul 2026

CIK 0001881294

GREENE MICHAEL ROBERT

Relationship: 10%+ Owner
Address: C/O AE INDUSTRIAL PARTNERS, LP, 6700 BROKEN SOUND PKWY NW, BOCA RATON
Signature: /s/ Matt Friendly, by Power of Attorney
Signature date: 10 Jul 2026

CIK 0001880788

ROWE DAVID H.

Relationship: 10%+ Owner
Address: C/O AE INDUSTRIAL PARTNERS, LP, 6700 BROKEN SOUND PKWY NW, BOCA RATON
Signature: /s/ Matt Friendly, by Power of Attorney
Signature date: 10 Jul 2026

Reported non-derivative transactions

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

YSS transaction

Common Stock, par value $0.0001 per share

Award

Transaction value
Shares: +2,289,366
Change %: +7.5%
Price: $34.00^*
Shares after: 32,915,588
Date: 08 Jul 2026
Ownership: See Footnotes
Footnotes: F1, F2, F3

YSS transaction

Common Stock, par value $0.0001 per share

Award

Transaction value
Shares: +2,289,366
Change %: +7.5%
Price: $34.00^*
Shares after: 32,915,588
Date: 08 Jul 2026
Ownership: See Footnotes
Footnotes: F1, F2, F3

YSS transaction

Common Stock, par value $0.0001 per share

Award

Transaction value
Shares: +2,289,366
Change %: +7.5%
Price: $34.00^*
Shares after: 32,915,588
Date: 08 Jul 2026
Ownership: See Footnotes
Footnotes: F1, F2, F3

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Consists of 605,899, 945,442, 559,633 and 178,392 shares of common stock issued to AE Industrial HorizonX Venture Fund I, LP ("HorizonX Venture Fund I"), AE Ventures Fund III, LP ("Ventures Fund III"), AE Industrial Partners Structured Solutions I, LP ("Structured Solutions I") and AE Industrial HorizonX Venture Co-Investment Fund I, LP ("HorizonX Venture Co-Investment Fund"), respectively, pursuant to that certain Agreement and Plan of Merger (the "Merger Agreement"), dated as of April 29, 2026, by and among York Space Systems Inc. (the "Company"), All.Space Holdings, Inc. and the other parties thereto.

Footnote F2

Consists of 2,832,488 shares held by AE Industrial Partners Fund II, LP, 1,813,066 shares held by AE Industrial Partners Fund II-A, LP, 6,842 shares held by AE Industrial Partners Fund II-B, LP, 10,908,489 shares held by AE Industrial Partners Fund III, LP, 3,258,380 shares held by AE Industrial Partners Fund III-A, LP, 566,675 shares held by AE Aerospace Opportunities Fund, 8,757,636 shares held by AE Co-Investment Partners Fund III-Y, LP (CIV), 1,475,343 shares held by AE Co-Investment Partners Fund III Y-2, LP, 23,916 shares held by AE Industrial PSO Equity Partners, LP, 553,253 shares held by AE Industrial Partners PBCI Aggregator, LP, 430,134 shares held by AE Industrial HorizonX Venture Fund II, LP, 605,899 shares held by HorizonX Venture Fund I, 945,442 shares held by Ventures Fund III, 559,633 shares held by Structured Solutions I and 178,392 shares held by HorizonX Venture Co-Investment Fund.

Footnote F3

Each entity described above is ultimately controlled by AeroEquity GP, LLC. AeroEquity GP, LLC is controlled by its managing members, Michael Greene and David Rowe. Messrs. Greene and Rowe make all voting and investment decisions with respect to the securities held by AE Industrial Partners. Each of the entities and individuals named above disclaims beneficial ownership of the securities held by AE Industrial Partners, except to the extent of its pecuniary interest therein.