Insider · CIK 0001703469
Melinda Litherland Pei
Files at BIO (BIO-RAD LABORATORIES, INC.), RPID (RAPID MICRO BIOSYSTEMS, INC.). First filing Nov 27, 2024, latest Dec 5, 2024.
In brief
Melinda Litherland Pei files SEC Form 4 as director at RPID (RAPID MICRO BIOSYSTEMS, INC.), and also at BIO (BIO-RAD LABORATORIES, INC.). Since Nov 27, 2024, Melinda Litherland Pei has reported 2 open-market buys worth $41k and 0 open-market sells worth $0, the latest filed on Dec 5, 2024.
A track record needs three past buys with six months of prices behind them; Melinda Litherland Pei has 0, so none is measured yet.
The newest scored trade: bought $20k of RPID on Dec 3, 2024, filed Dec 5, 2024, scored 30 (weak).
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
RPID: RAPID MICRO BIOSYSTEMS, INC.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 30Weak | RPIDbuy RAPID MICRO BIOSYSTEMS, INC. | $20k 20,000 shares | +58% | - | |
| 25Weak | RPIDbuy RAPID MICRO BIOSYSTEMS, INC. | $21k 20,000 shares | +140% | - |
Transactions
Every row this insider has filed, 17 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| May 29, 2026 | RPID RAPID MICRO BIOSYSTEMS, INC. | AGrant or award Class A Common Stock | +12,787 | $1.96 | $25k | 100,687 | Jun 2, 2026 |
| May 29, 2026 | RPID RAPID MICRO BIOSYSTEMS, INC. | AGrant or award Series A Warrant (right to buy)derivative | +12,787 | $0.00 | $0 | 12,787 | Jun 2, 2026 |
| May 29, 2026 | RPID RAPID MICRO BIOSYSTEMS, INC. | AGrant or award Series B Warrant (right to buy)derivative | +12,787 | $0.00 | $0 | 12,787 | Jun 2, 2026 |
| May 21, 2026 | RPID RAPID MICRO BIOSYSTEMS, INC. | AGrant or award Class A Common Stock | +19,300 | $0.00 | $0 | 87,900 | May 26, 2026 |
| May 21, 2026 | RPID RAPID MICRO BIOSYSTEMS, INC. | AGrant or award Stock Option (Right to Buy)derivative | +38,700 | $0.00 | $0 | 38,700 | May 26, 2026 |
| Apr 21, 2026 | BIO BIO-RAD LABORATORIES, INC. | MOption exercise Bio-Rad A Common Stock | +407 | $0.00 | $0 | 715 | Apr 23, 2026 |
| Apr 21, 2026 | BIO BIO-RAD LABORATORIES, INC. | AGrant or award Restricted Stock Unitsderivative | +369 | $0.00 | $0 | 369 | Apr 23, 2026 |
| Apr 21, 2026 | BIO BIO-RAD LABORATORIES, INC. | MOption exercise Restricted Stock Unitsderivative | -407 | $0.00 | $0 | 0 | Apr 23, 2026 |
| May 22, 2025 | RPID RAPID MICRO BIOSYSTEMS, INC. | AGrant or award Class A Common Stock | +14,300 | $0.00 | $0 | 68,600 | May 27, 2025 |
| May 22, 2025 | RPID RAPID MICRO BIOSYSTEMS, INC. | AGrant or award Stock Option (Right to Buy)derivative | +28,650 | $0.00 | $0 | 28,650 | May 27, 2025 |
| Apr 22, 2025 | BIO BIO-RAD LABORATORIES, INC. | MOption exercise Bio-Rad A Common Stock | +308 | $0.00 | $0 | 308 | Apr 24, 2025 |
| Apr 22, 2025 | BIO BIO-RAD LABORATORIES, INC. | AGrant or award Restricted Stock Unitsderivative | +407 | $0.00 | $0 | 407 | Apr 24, 2025 |
| Apr 22, 2025 | BIO BIO-RAD LABORATORIES, INC. | MOption exercise Restricted Stock Unitsderivative | -308 | $0.00 | $0 | 0 | Apr 24, 2025 |
| Dec 3, 2024 | RPID RAPID MICRO BIOSYSTEMS, INC. | POpen-market purchase Class A Common Stock | +10,880 | $1.00 | $11k | 45,180 | Dec 5, 2024 |
| Dec 5, 2024 | RPID RAPID MICRO BIOSYSTEMS, INC. | POpen-market purchase Class A Common Stock | +9,120 | $1.04 | $9,484 | 54,300 | Dec 5, 2024 |
| Nov 26, 2024 | RPID RAPID MICRO BIOSYSTEMS, INC. | POpen-market purchase Class A Common Stock | +108 | $1.04 | $112 | 14,408 | Nov 27, 2024 |
| Nov 27, 2024 | RPID RAPID MICRO BIOSYSTEMS, INC. | POpen-market purchase Class A Common Stock | +19,892 | $1.05 | $21k | 34,300 | Nov 27, 2024 |
Questions about Melinda Litherland Pei
Answered from the filings on this page, as of the latest one.
Is Melinda Litherland Pei buying or selling?
Not in the last 12 months. Melinda Litherland Pei's latest open-market trade on SEC Form 4 was bought $20k of RPID on Dec 3, 2024.
How did Melinda Litherland Pei's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Melinda Litherland Pei has 0.
Where does Melinda Litherland Pei file Form 4?
Melinda Litherland Pei has filed Form 4 at RPID (RAPID MICRO BIOSYSTEMS, INC.); BIO (BIO-RAD LABORATORIES, INC.). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.