Updated Jul 16, 2026
PEI MELINDA LITHERLAND has filed 3 SEC Form 4 filings across 2 companies in the last 90 days — buying. Lifetime open-market purchases: $41K. Historical track record: 1/5 stars across 4 tracked purchases.
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realised performance after each tracked open-market purchase.
| InsiderAlpha rating | ★☆☆☆☆ (1/5) |
|---|---|
| Total purchases tracked | 4 |
| Purchases with forward-return data | 4 |
| 30-day win rate | 0% |
| 90-day win rate | 10000% |
| Avg 5-day return | -45.74% |
| Avg 30-day return | -548.78% |
| Avg 90-day return | +16603.04% |
| Best 30-day return | +0.00% |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-02 | RPID | RAPID MICRO BIOSYSTEMS, INC. | A — Grant or award | 12.8K | $1.96 | $25K |
| 2026-05-26 | RPID | RAPID MICRO BIOSYSTEMS, INC. | A — Grant or award | 19.3K | $0.00 | |
| 2026-04-23 | BIO | BIO-RAD LABORATORIES, INC. | M — Option exercise | 407 | $0.00 | |
| 2025-04-22 | BIO | BIO-RAD LABORATORIES, INC. | M — Option exercise | 308 | $0.00 | |
| 2024-12-05 | RPID | RAPID MICRO BIOSYSTEMS, INC. | P — Open-market purchase | 9.1K | $1.04 | $9K |
| 2024-12-05 | RPID | RAPID MICRO BIOSYSTEMS, INC. | P — Open-market purchase | 10.9K | $1.00 | $11K |
| 2024-11-27 | RPID | RAPID MICRO BIOSYSTEMS, INC. | P — Open-market purchase | 19.9K | $1.05 | $21K |
| 2024-11-27 | RPID | RAPID MICRO BIOSYSTEMS, INC. | P — Open-market purchase | 108 | $1.04 | $112 |
PEI MELINDA LITHERLAND is a corporate insider — currently tracked as Director of RAPID MICRO BIOSYSTEMS, INC. (RPID). InsiderAlpha tracks every SEC Form 4 filing in real time.
3 primary Form 4 filings in the last 90 days, covering 2 companies.
Recorded transactions: 4 open-market purchases ($41K) and 0 open-market sales () across all tracked filings.
Across 4 tracked purchases, PEI MELINDA LITHERLAND averaged -548.8% avg 30-day return with a 0% 30-day win rate. InsiderAlpha rates the track record at 1/5 stars.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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