Form 4 for YSS York Space Systems Inc.
Accepted 2026-06-05 16:05:16 ET · period of report 2026-06-04 · accession 0001104659-26-070964 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| I | 2026-06-05 16:05 | 2026-06-04 | YSS | AEROEQUITY GP, LLC | 10% | A - Grant | $34.00 | +287.8K | 30.48M | +1.0% | +$9.78M |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock, par value $0.0001 per share | 2026-06-04 | A | A | 287,789 | $34.00 | 30,483,877 | I See Footnotes | — | — | (F1) Consists of 287,789 shares of common stock issued to AE Industrial HorizonX Venture Fund II, LP, pursuant to that certain Agreement and Plan of Reorganization (the "Merger Agreement"), dated as of May 15, 2026, by and among York Space Systems Inc. (the "Company"), Solestial, Inc. and the other parties thereto. (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 and 287,789 shares held by AE Industrial HorizonX Venture Fund II, LP. (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 and 287,789 shares held by AE Industrial HorizonX Venture Fund II, LP. (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. |