Hamamatsu Shigeyuki
Officer · OOMA
As of 2026-09-16, Hamamatsu Shigeyuki has 35 Form 4 transactions on record across 1 company — 19 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Pattern in the record: open-market sales filed in September in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.
Reconstructed holdings
- Direct $3.8M
- Indirect $0
| OOMA | direct | 170,090 sh | $3.8M |
Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.
Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-01 | OOMA | Sale | 4,807 @ $22.33 | $107K | −2.6% of holding | 179,420 | Form 4 |
| 2026-06-02 | OOMA | Sale | 27,696 @ $17.64 | $489K | −12.5% of holding | 193,283 | Form 4 |
| 2026-03-06 | OOMA | Sale | 10,790 @ $14.22 | $153K | −4.5% of holding | 231,128 | Form 4 |
| 2025-09-04 | OOMA | Sale | 7,335 @ $12.89 | $95K | −3.7% of holding | 191,972 | Form 4 |
| 2025-06-09 | OOMA | Sale | 10,704 @ $13.31 | $142K | −4.9% of holding | 207,909 | Form 4 |
| 2024-12-10 | OOMA | Sale | 35,313 @ $15.51 | $548K | −17.6% of holding | 165,301 | Form 4 |
29 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-09-10 | OOMA | Withheld for tax | 3,058 | 170,090 | Form 4 |
| 2026-09-08 | OOMA | Withheld for tax | 3,191 | 173,148 | Form 4 |
| 2026-09-01 | OOMA | Withheld for tax | 3,081 | 176,339 | Form 4 |
| 2026-06-15 | OOMA | Withheld for tax | 2,971 | 184,227 | Form 4 |
| 2026-06-10 | OOMA | Withheld for tax | 2,961 | 187,198 | Form 4 |
| 2026-06-08 | OOMA | Withheld for tax | 3,124 | 190,159 | Form 4 |
| 2026-06-01 | OOMA | Withheld for tax | 2,942 | 220,979 | Form 4 |
| 2026-03-15 | OOMA | Withheld for tax | 2,382 | 223,921 | Form 4 |
| 2026-03-10 | OOMA | Withheld for tax | 2,345 | 226,303 | Form 4 |
| 2026-03-08 | OOMA | Withheld for tax | 2,480 | 228,648 | Form 4 |
| 2026-03-01 | OOMA | Withheld for tax | 1,200 | 171,918 | Form 4 |
| 2026-03-01 | OOMA | Award / grant | 70,000 | 241,918 | Form 4 |
| 2025-12-15 | OOMA | Withheld for tax | 3,231 | 173,118 | Form 4 |
| 2025-12-10 | OOMA | Withheld for tax | 3,239 | 176,349 | Form 4 |
| 2025-12-08 | OOMA | Withheld for tax | 3,300 | 179,588 | Form 4 |
| 2025-12-01 | OOMA | Withheld for tax | 1,678 | 182,888 | Form 4 |
| 2025-09-15 | OOMA | Withheld for tax | 5,051 | 184,566 | Form 4 |
| 2025-09-10 | OOMA | Withheld for tax | 2,355 | 189,617 | Form 4 |
| 2025-09-01 | OOMA | Withheld for tax | 1,198 | 199,307 | Form 4 |
| 2025-06-15 | OOMA | Withheld for tax | 5,049 | 200,505 | Form 4 |
| 2025-06-10 | OOMA | Withheld for tax | 2,355 | 205,554 | Form 4 |
| 2025-06-08 | OOMA | Withheld for tax | 2,492 | 218,613 | Form 4 |
| 2025-06-01 | OOMA | Withheld for tax | 1,549 | 221,105 | Form 4 |
| 2025-03-15 | OOMA | Withheld for tax | 4,985 | 222,654 | Form 4 |
| 2025-03-10 | OOMA | Award / grant | 70,000 | 227,639 | Form 4 |
| 2025-03-08 | OOMA | Withheld for tax | 2,454 | 157,639 | Form 4 |
| 2025-03-01 | OOMA | Withheld for tax | 816 | 160,093 | Form 4 |
| 2024-12-15 | OOMA | Withheld for tax | 4,392 | 160,909 | Form 4 |
| 2024-12-08 | OOMA | Withheld for tax | 2,169 | 200,614 | Form 4 |
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.