YORK SPACE SYSTEMS INC (YSS) — insider trading
Industrials · NYSE
YORK SPACE SYSTEMS INC (YSS) has 26 reported SEC Form 4 insider transactions in our data, including 1 open-market purchase and 14 open-market sales among the most recent 26 (latest 2026-08-07).
Recent Form 4 transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-08-07 | BlackRock Portfolio Management LLC | 10% owner | Open-market sale | 200,170 | $10.99 | $2.20M | Form 4 |
| 2026-08-06 | BlackRock Portfolio Management LLC | 10% owner | Open-market sale | 201,504 | $11.60 | $2.34M | Form 4 |
| 2026-08-05 | BlackRock Portfolio Management LLC | 10% owner | Open-market sale | 11,884 | $15.28 | $181.6K | Form 4/A |
| 2026-08-05 | BlackRock Portfolio Management LLC | 10% owner | Open-market sale | 116,162 | $13.49 | $1.57M | Form 4/A |
| 2026-08-05 | BlackRock Portfolio Management LLC | 10% owner | Open-market sale | 11,784 | $15.28 | $180.1K | Form 4 |
| 2026-08-05 | BlackRock Portfolio Management LLC | 10% owner | Open-market sale | 116,162 | $13.49 | $1.57M | Form 4 |
| 2026-08-04 | BlackRock Portfolio Management LLC | 10% owner | Open-market sale | 468,476 | $15.58 | $7.30M | Form 4/A |
| 2026-08-04 | BlackRock Portfolio Management LLC | 10% owner | Open-market sale | 78,082 | $15.02 | $1.17M | Form 4/A |
| 2026-08-04 | BlackRock Portfolio Management LLC | 10% owner | Open-market sale | 456,310 | $15.58 | $7.11M | Form 4 |
| 2026-08-04 | BlackRock Portfolio Management LLC | 10% owner | Open-market sale | 77,743 | $15.02 | $1.17M | Form 4 |
| 2026-08-03 | BlackRock Portfolio Management LLC | 10% owner | Open-market sale | 13,754 | $15.03 | $206.7K | Form 4 |
| 2026-07-31 | BlackRock Portfolio Management LLC | 10% owner | Open-market sale | 35,574 | $15.14 | $538.6K | Form 4 |
| 2026-07-30 | BlackRock Portfolio Management LLC | 10% owner | Open-market sale | 140,823 | $15.18 | $2.14M | Form 4 |
| 2026-07-29 | BlackRock Portfolio Management LLC | 10% owner | Open-market sale | 63,390 | $15.31 | $970.5K | Form 4 |
| 2026-07-08 | AEROEQUITY GP, LLC; GREENE MICHAEL ROBERT; ROWE DAVID H. | 10% owner | Grant / award / vesting | 2,289,366 | $34.00 | $77.84M | Form 4 |
| 2026-06-04 | AEROEQUITY GP, LLC; GREENE MICHAEL ROBERT; ROWE DAVID H. | 10% owner | Grant / award / vesting | 430,134 | $34.00 | $14.62M | Form 4/A |
| 2026-06-04 | AEROEQUITY GP, LLC; GREENE MICHAEL ROBERT; ROWE DAVID H. | 10% owner | Grant / award / vesting | 287,789 | $34.00 | $9.78M | Form 4 |
| 2026-04-10 | Davidson Janine | Director | Grant / award / vesting | 4,381 | — | $0 | Form 4 |
| 2026-01-30 | Wallinger Dirk | Director, Officer (Chief Executive Officer) | Grant / award / vesting | 211,176 | — | $0 | Form 4/A |
| 2026-01-30 | Wallinger Dirk | Director, Officer (Chief Executive Officer) | Grant / award / vesting | 569,920 | — | $0 | Form 4 |
| 2026-01-30 | McConville James | Director | Grant / award / vesting | 5,294 | — | $0 | Form 4 |
| 2026-01-30 | Konert Kirk Michael | Director | Grant / award / vesting | 5,294 | — | $0 | Form 4 |
| 2026-01-30 | Messerle Kevin | Officer (Chief Financial Officer) | Grant / award / vesting | 80,882 | — | $0 | Form 4 |
| 2026-01-30 | Erwin Tami A. | Director | Open-market purchase | 2,941 | $34.00 | $100.0K | Form 4 |
| 2026-01-30 | Erwin Tami A. | Director | Grant / award / vesting | 5,294 | — | $0 | Form 4 |
| 2026-01-30 | Frantz Brian D | Officer (Chief Accounting Officer) | Grant / award / vesting | 10,294 | — | $0 | Form 4 |
Ask the chat about YSS's insider activity →
Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: YORK SPACE SYSTEMS INC (YSS).
Last updated 2026-08-07 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.