John C Shoemaker
CIK 1299645 · last filed 2025-11-13
John C Shoemaker is a corporate insider who has filed 54 SEC Form 4 insider transactions across 3 companies since 2007. The most recent filing, for EXTR, was dated Nov 13, 2025. Across all open-market trades the lifetime net is +$695.1K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $29.9M 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.
$29.86M
3
54
$695.1K
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| EXTR | Director | 959,711 | $31.11 | $29.86M | $695.1K | 33 | 2025-11-13 |
| ALTERA CORP (ALTR) Delisted | Director | 31,319 | $111.85 | $3.50M | $0 | 15 | 2015-05-14 |
| SONICWALL INC (SNWL) Delisted | Director | 0 | — | — | $0 | 5 | 2010-07-23 |
Recent Filings
54 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-11-13 | EXTR | Mixed | +13,354 | $0 | EDGAR |
| 2024-11-18 | EXTR | Grant (A) | — | $0 | EDGAR |
| 2024-11-12 | EXTR | Exer (M) | +12,975 | $0 | EDGAR |
| 2023-11-09 | EXTR | Mixed | +11,466 | $0 | EDGAR |
| 2023-09-06 | EXTR | Gift (G) | −2,400 | $0 | EDGAR |
| 2022-11-18 | EXTR | Grant (A) | — | $0 | EDGAR |
| 2022-11-07 | EXTR | Exer (M) | +16,521 | $0 | EDGAR |
| 2021-11-08 | EXTR | Mixed | +42,505 | $0 | EDGAR |
| 2021-05-19 | EXTR | Buy (P) | +7,200 | $72.0K | EDGAR |
| 2020-11-09 | EXTR | Mixed | +28,358 | $0 | EDGAR |