Billerbeck Darin G (CIK 1388177) reported 6 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-05-22). Recent activity: Buy MRAM (3,852 shares), Buy MRAM (30,000 shares), Sell MRAM (30,000 shares), Buy MRAM (12,000 shares), Sell MRAM (12,000 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-22 | EVERSPIN TECHNOLOGIES INC. (MRAM) | Director | Buy | 3,852 | $0 |
| 2026-05-13 | EVERSPIN TECHNOLOGIES INC. (MRAM) | Director | Buy | 30,000 | $255,600 |
| 2026-05-13 | EVERSPIN TECHNOLOGIES INC. (MRAM) | Director | Sell | 30,000 | $1.1M |
| 2025-11-12 | EVERSPIN TECHNOLOGIES INC. (MRAM) | Director | Buy | 12,000 | $86,400 |
| 2025-11-12 | EVERSPIN TECHNOLOGIES INC. (MRAM) | Director | Sell | 12,000 | $113,040 |
| 2025-05-27 | EVERSPIN TECHNOLOGIES INC. (MRAM) | Director | Buy | 20,325 | $0 |
Source: SEC Form 4 filings · as of 2026-05-22