John Edward Williams
CIK 1710173 · EVP & GM, PSD · last filed 2026-04-20
John Edward Williams is an EVP & GM, PSD who has filed 16 SEC Form 4 insider transactions across 2 companies since 2017. The most recent filing, for MKSI, was dated Apr 20, 2026. Across all open-market trades the lifetime net is −$827.7K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $1.9M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$1.91M
2
16
-$827.7K
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| MKSI | EVP & GM, PSD | 5,380 | $355.69 | $1.91M | -$737.4K | 11 | 2026-04-20 |
| ELECTRO SCIENTIFIC INDUSTRIES INC (ESIO) Delisted | VICE PRESIDENT OF MARKETING | 45,900 | — | — | -$90.3K | 5 | 2019-02-01 |
Recent Filings
16 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-04-20 | MKSI | Mixed | +914 | -$222.9K | EDGAR |
| 2026-02-23 | MKSI | Sell (S) | −2,042 | -$523.7K | EDGAR |
| 2026-02-18 | MKSI | Mixed | +2,042 | -$311.7K | EDGAR |
| 2026-02-09 | MKSI | Grant (A) | — | $0 | EDGAR |
| 2025-08-18 | MKSI | Mixed | +639 | -$32.3K | EDGAR |
| 2025-04-18 | MKSI | Mixed | +1,175 | -$36.0K | EDGAR |
| 2025-02-19 | MKSI | Mixed | +1,812 | -$93.4K | EDGAR |
| 2025-02-11 | MKSI | Grant (A) | — | $0 | EDGAR |
| 2024-08-19 | MKSI | Sell (S) | −1,800 | -$213.7K | EDGAR |
| 2024-08-16 | MKSI | Mixed | +639 | -$35.0K | EDGAR |