Shigeyuki Hamamatsu
CIK 1379827 · Chief Financial Officer · last filed 2026-06-11
"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.
Loading insider history…
Disclosed Exposure
$3.38M
Companies
3
Total Filings
76
Lifetime Open-Market Net
-$2.11M
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.
Recent Filings · Page 2 of 8
76 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-12-03 | OOMA | Tax (F) | −1,678 | -$18.4K | EDGAR |
| 2025-09-17 | OOMA | Tax (F) | −7,406 | -$93.8K | EDGAR |
| 2025-09-05 | OOMA | Sell (S) | −7,335 | -$94.5K | EDGAR |
| 2025-09-03 | OOMA | Tax (F) | −1,198 | -$15.5K | EDGAR |
| 2025-06-17 | OOMA | Tax (F) | −5,049 | -$61.6K | EDGAR |
| 2025-06-12 | OOMA | Tax (F) | −2,355 | -$30.5K | EDGAR |
| 2025-06-10 | OOMA | Mixed | −13,196 | -$175.5K | EDGAR |
| 2025-06-03 | OOMA | Tax (F) | −1,549 | -$21.1K | EDGAR |
| 2025-03-18 | OOMA | Tax (F) | −4,985 | -$67.8K | EDGAR |
| 2025-03-11 | OOMA | Mixed | +67,546 | -$34.5K | 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.