GARY K WILLIS
CIK 1121475 · Chief Executive Officer · last filed 2026-01-06
"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.
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Disclosed Exposure
$1.91M
Companies
4
Total Filings
117
Lifetime Open-Market Net
-$4.08M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| PLUG | Director | 690,354 | $2.76 | $1.91M | -$2.42M | 91 | 2026-01-06 |
| ROFIN SINAR TECHNOLOGIES INC (RSTI) Delisted | Director | 0 | — | — | -$741.6K | 16 | 2016-11-07 |
| ZYGO CORP (ZIGO) Delisted | Chief Executive Officer | 111,646 | — | — | -$991.4K | 7 | 2013-11-13 |
| VION PHARMACEUTICALS INC (VION) Delisted | Director | 85,535 | — | — | $76.0K | 2 | 2007-06-28 |
Recent Filings · Page 6 of 12
117 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2016-05-20 | PLUG | Grant (A) | — | $0 | EDGAR |
| 2016-04-05 | PLUG | Grant (A) | +4,268 | $8.7K | EDGAR |
| 2016-01-15 | PLUG | Grant (A) | +4,167 | $8.8K | EDGAR |
| 2015-10-28 | PLUG | Grant (A) | +4,654 | $8.7K | EDGAR |
| 2015-10-02 | ROFIN SINAR TECHNOLOGIES INC (RSTI) Delisted | Grant (A) | +3,000 | $77.0K | EDGAR |
| 2015-07-17 | PLUG | Grant (A) | +3,723 | $8.7K | EDGAR |
| 2015-02-13 | PLUG | Grant (A) | +5,872 | $17.5K | EDGAR |
| 2014-10-02 | ROFIN SINAR TECHNOLOGIES INC (RSTI) Delisted | Grant (A) | +3,000 | $68.7K | EDGAR |
| 2014-07-02 | PLUG | Grant (A) | +3,708 | $17.5K | EDGAR |
| 2014-01-21 | PLUG | Grant (A) | +7,511 | $17.5K | EDGAR |
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.