Alistair N. Sporck
Alistair N. Sporck: VP Contactor Business Unit at Aehr Test Systems. What Alistair N. Sporck holds in an AI or semiconductor company tracked on Silicon Floor, from their SEC filings, broken down: the shares held and how, then any restricted shares, options or other rights declared.
Aehr Test Systems (AEHR)
Alistair N. Sporck holds 28,546 Aehr Test Systems shares (0.09% of the company), worth about $2.3M at the last price, according to the Form 4 of Oct 2, 2026.
- Shares held: 22,148 (0.07%), $1.8M — Held in their own name.
- Shares held: 6,398 (0.02%), $509,792.64 — Held through trusts (By Trust).
Declarations
- Aehr Test Systems (AEHR) — Form 4 of Oct 2, 2026 (VP Contactor Business Unit): shares withheld for tax of 345 at $107.21; 28,546 shares after 0001040470-26-000283
- Aehr Test Systems (AEHR) — Form 4 of Oct 1, 2026 (VP Contactor Business Unit): shares withheld for tax of 54 at $101.60; other of 1,221 at $6.67; 28,891 shares after 0001040470-26-000279
- Aehr Test Systems (AEHR) — Form 4 of Aug 10, 2026 (VP Contactor Business Unit): open-market sale of 1,000 at $108.49; 27,724 shares after 0001040470-26-000241
- Aehr Test Systems (AEHR) — Form 4 of Aug 4, 2026 (VP Contactor Business Unit): open-market sale of 699 at $100.70; open-market sale of 1,301 at $101.10; 28,724 shares after 0001040470-26-000239
- Aehr Test Systems (AEHR) — Form 4 of Jul 27, 2026 (VP Contactor Business Unit): shares withheld for tax of 133 at $77.48; 30,724 shares after 0001040470-26-000225
- Aehr Test Systems (AEHR) — Form 4 of Jul 20, 2026 (VP Contactor Business Unit): shares withheld for tax of 334 at $81.05; 30,857 shares after 0001040470-26-000217
- Aehr Test Systems (AEHR) — Form 4 of Jul 13, 2026 (VP Contactor Business Unit): shares withheld for tax of 209 at $72.60; 31,191 shares after 0001040470-26-000207
- Aehr Test Systems (AEHR) — Form 4 of Jul 2, 2026 (VP Contactor Business Unit): grant or award of 6,165; grant or award of 2,369; 31,400 shares after 0001040470-26-000193
- Aehr Test Systems (AEHR) — Form 4 of Apr 27, 2026 (VP Contactor Business Unit): shares withheld for tax of 133 at $88.48; 25,338 shares after 0001040470-26-000158
- Aehr Test Systems (AEHR) — Form 4 of Apr 22, 2026 (VP Contactor Business Unit): open-market sale of 2,000 at $93.50; 25,471 shares after 0001040470-26-000146
- Aehr Test Systems (AEHR) — Form 4 of Apr 18, 2026 (VP Contactor Business Unit): shares withheld for tax of 341 at $83.86; 27,471 shares after 0001040470-26-000132
- Aehr Test Systems (AEHR) — Form 4 of Apr 16, 2026 (VP Contactor Business Unit): open-market sale of 2,000 at $81.88; 27,812 shares after 0001040470-26-000116
- Aehr Test Systems (AEHR) — Form 4 of Apr 11, 2026 (VP Contactor Business Unit): open-market sale of 2,000 at $67.37; shares withheld for tax of 220 at $70.43; 29,812 shares after 0001040470-26-000097
- Aehr Test Systems (AEHR) — Form 4 of Apr 2, 2026 (VP Contactor Business Unit): shares withheld for tax of 298 at $44.32; other of 1,963 at $6.67; 32,032 shares after 0001040470-26-000075
- Aehr Test Systems (AEHR) — Form 4 of Feb 9, 2026 (VP Contactor Business Unit): open-market sale of 2,700 at $27.57; open-market sale of 300 at $27.59; 30,367 shares after 0001040470-26-000052
Sources: SEC Schedules 13D and 13G (stakes above 5%, which count everything a person votes or can acquire within 60 days) and Forms 3, 4 and 5 (the shares a director, officer or 10% owner holds, filed within two business days of each trade). Values at the last price.
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