RIBAR GEOFFREY G (CIK 1247434) reported 12 SEC Form 4 insider transactions across 4 companies over the past 18 months (most recent 2026-06-05). Recent activity: Buy QS (24,183 shares), Buy MRAM (3,852 shares), Sell MRAM (27,488 shares), Sell MTSI (1,623 shares), Buy MTSI (776 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-05 | QuantumScape Corp (QS) | Director | Buy | 24,183 | $0 |
| 2026-05-22 | EVERSPIN TECHNOLOGIES INC. (MRAM) | Director | Buy | 3,852 | $0 |
| 2026-05-21 | EVERSPIN TECHNOLOGIES INC. (MRAM) | Director | Sell | 27,488 | $793,579 |
| 2026-05-13 | MACOM Technology Solutions Holdings, Inc. (MTSI) | Director | Sell | 1,623 | $587,266 |
| 2026-03-10 | MACOM Technology Solutions Holdings, Inc. (MTSI) | Director | Buy | 776 | $0 |
| 2026-02-27 | MACOM Technology Solutions Holdings, Inc. (MTSI) | Director | Sell | 2,244 | $569,056 |
| 2026-01-30 | QuantumScape Corp (QS) | Director | Buy | 29,878 | $0 |
| 2026-01-30 | QuantumScape Corp (QS) | Director | Buy | 6,224 | $0 |
| 2025-06-03 | ACACIA RESEARCH CORP (ACTG) | Director | Buy | 32,172 | $0 |
| 2025-05-27 | EVERSPIN TECHNOLOGIES INC. (MRAM) | Director | Buy | 20,325 | $0 |
| 2025-03-11 | MACOM Technology Solutions Holdings, Inc. (MTSI) | Director | Buy | 1,623 | $0 |
| 2025-02-14 | MACOM Technology Solutions Holdings, Inc. (MTSI) | Director | Sell | 6,656 | $809,436 |
Source: SEC Form 4 filings · as of 2026-06-05