Insiders / Pei Melinda Litherland
Pei Melinda Litherland
CIK 1703469personinsider
Companies
2
First seen
Apr 23, 2026
Last activity
Jun 2, 2026
Companies
| Company | Shares held | Latest |
|---|---|---|
| Rapid Micro Biosystems, Inc. · RPID | 100,687 | — |
| Bio-Rad Laboratories, Inc. · BIO | 715 | — |
All securities held
5 positions · latest reported per filing
| Company | Security | Shares |
|---|---|---|
| Bio-Rad Laboratories, Inc. | Bio-Rad A Common Stock | 715 |
| Rapid Micro Biosystems, Inc. | Class A Common Stock | 100,687 |
| Rapid Micro Biosystems, Inc. | Stock Option (Right to Buy)Derivative | 38,700 |
| Rapid Micro Biosystems, Inc. | Series A Warrant (right to buy)Derivative | 12,787 |
| Rapid Micro Biosystems, Inc. | Series B Warrant (right to buy)Derivative | 12,787 |
Activity
InsidersInstitutions
This person's insider trades (Form 4), across every company.| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| May 29, 2026 | Grant | RPID Rapid Micro Biosystems, Inc. Class A Common Stock | $25.0K | +13K +14.55% | 100,687 0.20% of shares | low |
| May 21, 2026 | Grant | RPID Rapid Micro Biosystems, Inc. Class A Common Stock | $0 | +19K +28.13% | 87,900 0.18% of shares | low |
| Apr 21, 2026 | Exercise | BIO Bio-Rad Laboratories, Inc. Bio-Rad A Common Stock | $0 | +407 +132.14% | 715 <0.01% of shares | low |
| May 29, 2026 | Grant | RPID Rapid Micro Biosystems, Inc. Series B Warrant (right to buy) | — | +13K | 12,787 0.03% of shares | low |
| May 29, 2026 | Grant | RPID Rapid Micro Biosystems, Inc. Series A Warrant (right to buy) | — | +13K | 12,787 0.03% of shares | low |
| May 21, 2026 | Grant | RPID Rapid Micro Biosystems, Inc. Stock Option (Right to Buy) | — | +39K | 38,700 0.08% of shares | low |
| Apr 21, 2026 | Exercise | BIO Bio-Rad Laboratories, Inc. Restricted Stock Units | — | -407 -100.00% | 0 0.00% of shares | low |
| Apr 21, 2026 | Grant | BIO Bio-Rad Laboratories, Inc. Restricted Stock Units | — | +369 | 369 <0.01% of shares | low |