SEC CIK 1222896
FOSTER RONALD C
Reported ownership across 4 companies, sourced from SEC Form 4 filings and updated daily.
Current Positions
| Company | Shares Owned | As Of |
|---|---|---|
| MUview stock → | 580,416 | 2015-02-18 |
| MRAMview stock → | 32,586 | 2020-05-19 |
| AEISview stock → | 6,663 | 2026-05-02 |
| FORMview stock → | 2,883 | 2007-06-15 |
Position History — AEIS
Reported shares owned immediately after each Form 4 transaction, over time.
Recent Filings — AEIS
| Date | Activity | Shares | Price | Owned After |
|---|---|---|---|---|
| 2026-05-07 | Grant / award (derivative) | 587 | $0.00 | 587 |
| 2026-05-02 | Option exercise (derivative) | 2,313 | $0.00 | 0 |
| 2026-05-02 | Option exercise | 2,313 | — | 6,663 |
| 2025-05-03 | Option exercise (derivative) | 2,093 | $0.00 | 0 |
| 2025-05-03 | Option exercise | 2,093 | — | 4,350 |
| 2025-05-02 | Grant / award (derivative) | 2,313 | $0.00 | 2,313 |
| 2024-05-05 | Option exercise (derivative) | 2,257 | $0.00 | 0 |
| 2024-05-05 | Option exercise | 2,257 | — | 2,257 |
| 2024-05-03 | Grant / award (derivative) | 2,093 | $0.00 | 2,093 |
| 2023-12-13 | Open-market sale | 618 | $105.00 | 0 |
| 2023-12-01 | Open-market sale | 1,000 | $95.00 | 618 |
| 2023-11-15 | Open-market sale | 1,000 | $95.00 | 1,618 |
| 2023-10-02 | Open-market sale | 1,000 | $103.26 | 2,618 |
| 2023-09-01 | Open-market sale | 1,000 | $118.48 | 3,618 |
| 2023-08-01 | Open-market sale | 1,000 | $123.46 | 5,618 |
| 2023-07-03 | Open-market sale | 1,000 | $110.91 | 7,618 |
| 2023-06-07 | Open-market sale | 1,000 | $105.00 | 9,618 |
| 2023-06-01 | Open-market sale | 1,000 | $97.98 | 10,618 |
| 2023-05-25 | Open-market sale | 1,000 | $95.00 | 11,618 |
| 2023-05-05 | Grant / award (derivative) | 2,257 | $0.00 | 2,257 |
| 2022-05-09 | Grant / award | 2,655 | $0.00 | 12,618 |
| 2021-05-07 | Gift | 18,425 | $0.00 | 18,425 |
| 2021-05-07 | Gift | 18,425 | $0.00 | 9,963 |
| 2021-04-30 | Grant / award | 1,813 | $0.00 | 28,388 |
| 2020-04-30 | Grant / award | 3,500 | $0.00 | 45,000 |
| 2019-06-04 | Grant / award | 3,500 | $51.87 | 41,500 |
| 2018-05-03 | Grant / award | 6,000 | $61.48 | 38,000 |
| 2017-05-04 | Grant / award | 6,000 | $74.29 | 32,000 |
| 2016-05-05 | Grant / award | 8,000 | $34.55 | 26,000 |
| 2015-05-07 | Grant / award | 8,000 | $24.96 | 18,000 |
| 2014-11-06 | — | — | — | 10,000 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.