William L. Ballhaus is CEO & Chairman +1 at MERCURY SYSTEMS INC (MRCY). They have made 8 open-market trades across 1 company since 2023, most recently 2026-08-26.
CIK 0001436044
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.
2 open-market purchases totalling $3.4M since 2023, against 6 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| MRCY | 324,782 | $24.1M |
| DCP | 80,850 | $3.4M |
| Total | $27.5M |
Shares reported on the most recent Form 4, priced at the 2026-09-15 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 |
|---|---|---|---|---|---|---|---|---|
| MRCY | SELL | 2026-08-25 | 2026-08-27 | $87.72 | $14.1M | -10.9% | -11.7% | — |
| MRCY | SELL | 2026-08-21 | 2026-08-25 | $90.59 | $15.7M | -5.8% | -5.0% | — |
| MRCY | SELL | 2026-08-19 | 2026-08-21 | $99.12 | $4.8M | -8.8% | -5.5% | — |
| MRCY | SELL | 2026-08-17 | 2026-08-19 | $111.18 | $3.1M | -10.8% | -12.9% | — |
| MRCY | SELL | 2025-08-18 | 2025-08-20 | $65.37 | $3.1M | +5.6% | +18.3% | +6.1% |
| MRCY | SELL | 2024-08-19 | 2024-08-21 | $39.49 | $517K | -2.8% | -6.2% | +1.9% |
| MRCY | BUY | 2024-02-09 | 2024-02-13 | $28.75 | $406K | -8.6% | -6.5% | -8.6% |
| MRCY | BUY | 2023-08-18 | 2023-08-22 | $37.57 | $3.0M | -1.8% | -4.5% | -13.8% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.