Robert C. Malenka is Director at MapLight Therapeutics, Inc. (MPLT). They have made 5 open-market trades across 1 company since 2026, most recently 2026-04-15.
CIK 0002021198
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 5 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| MPLT | 316,466 | $2.4M |
Shares reported on the most recent Form 4, priced at the 2026-04-17 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| MPLT | SELL · 10b5-1 | 2026-04-15 | 2026-04-17 | $26.90 | $231K | +1.5% | -11.0% | +24.3% |
| MPLT | SELL | 2026-02-20 | 2026-02-24 | $18.34 | $260K | +4.5% | +8.5% | +66.9% |
| MPLT | SELL | 2026-02-13 | 2026-02-18 | $18.21 | $221K | +1.8% | +1.6% | +56.5% |
| MPLT | SELL | 2026-02-10 | 2026-02-12 | $18.12 | $124K | -2.1% | +4.9% | +71.3% |
| MPLT | SELL | 2026-02-02 | 2026-02-04 | $18.02 | $127K | +3.0% | +10.5% | +66.7% |
| MPLT | SELL | 2026-01-28 | 2026-01-30 | $18.49 | $636K | +0.9% | -0.1% | +80.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.