Updated Jul 16, 2026 · Last SEC filing 2026-05-21
ASTROTECH Corp (ASTC) has filed 5 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-05-21. 3 Form 8-K material event filings were reported by ASTC in the last 90 days. InsiderAlpha tracks every ASTC SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Laboratory Analytical Instruments (SIC 3826) |
|---|---|
| SEC CIK | 0001001907 |
| Form 4 filings (90d) | 5 |
|---|---|
| Form 8-K filings (90d) | 3 |
| Latest Form 4 filing | 2026-05-21 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| MCFARLAND ROBERT N | Director | A — Grant or award | 6.0K | $0.00 | — | SEC | |
| Stober Eric | Director | A — Grant or award | 6.0K | $0.00 | — | SEC | |
| Wilkinson Tom | Director | A — Grant or award | 6.0K | $0.00 | — | SEC | |
| Winn Charles Arch | Director | A — Grant or award | 6.0K | $0.00 | — | SEC | |
| Leonard Braden Michael | Insider | S — Open-market sale | 220.4K | $7.13 | $1.57M | SEC | |
| Leonard Braden Michael | Insider | S — Open-market sale | 9.2K | $5.83 | $53K | SEC | |
| Stober Eric | Director | A — Grant or award | 3.0K | $0.00 | — | SEC | |
| MCFARLAND ROBERT N | Director | A — Grant or award | 3.0K | $0.00 | — | SEC | |
| Halinski John William | Director | A — Grant or award | 6.0K | $0.00 | — | SEC | |
| Pickens Thomas Boone III | CEO | A — Grant or award | 50.0K | $0.00 | — | SEC | |
| Halinski John William | Director | A — Grant or award | 3.0K | $0.00 | — | SEC | |
| Winn Charles Arch | Director | A — Grant or award | 3.0K | $0.00 | — | SEC | |
| Wilkinson Thomas Wiley | Director | A — Grant or award | 3.0K | $0.00 | — | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for ASTROTECH Corp (ASTC). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Winn Charles Arch | 1 | — |
| Halinski John William | 1 | — |
| Stober Eric | 1 | — |
| MCFARLAND ROBERT N | 1 | — |
| Wilkinson Tom | 1 | — |
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in ASTC insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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