LUDWIG MICHAEL M — SEC Form 4 filings
SEC reporting owner CIK 1256949. 5 Form 4 filings on record with FilingPulse; latest filed 2026-03-06.
Transaction summary — filings shown
Covers all 5 filings on record, filed 2024-03-04 to 2026-03-06. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): none reported.
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 12.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| AMTECH SYSTEMS INC (ASYS) | Director | 5 | — | — | 12 |
Form 4 filings — LUDWIG MICHAEL M
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-03-06 | 4 | AMTECH SYSTEMS INC (ASYS) | Option exercise (M): 8,081 @ $0 · Grant/award (A): 2,839 (derivative) @ $0 · Option exercise (M): 8,081 (derivative) @ $0 | EDGAR |
| 2025-03-07 | 4 | AMTECH SYSTEMS INC (ASYS) | Option exercise (M): 8,299 @ $0 · Grant/award (A): 8,081 (derivative) @ $0 · Option exercise (M): 8,299 (derivative) @ $0 | EDGAR |
| 2024-03-13 | 4 | AMTECH SYSTEMS INC (ASYS) | Grant/award (A): 2,000 @ $4.73 | EDGAR |
| 2024-03-08 | 4 | AMTECH SYSTEMS INC (ASYS) | Grant/award (A): 6,000 @ $4.85 · Grant/award (A): 1,500 @ $4.91 · Grant/award (A): 8,299 (derivative) @ $0 | EDGAR |
| 2024-03-04 | 4 | AMTECH SYSTEMS INC (ASYS) | Option exercise (M): 4,189 @ $0 · Option exercise (M): 4,189 (derivative) @ $0 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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