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.

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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.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
OOMA Chief Financial Officer 187,198 $17.55 $3.29M -$1.43M 54 2026-06-11
ARAY SVP & CFO 228,009 $0.34 $77.8K -$145.2K 10 2020-12-02
NETL 663 $26.98 $17.9K -$542.6K 12 2008-01-02

Recent Filings · Page 6 of 8

76 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2022-09-06 OOMA Tax (F) −798 -$9.3K EDGAR
2022-06-03 OOMA Tax (F) −829 -$11.7K EDGAR
2022-03-03 OOMA Grant (A) +35,000 $0 EDGAR
2021-09-20 OOMA Grant (A) +80,000 $0 EDGAR
2020-12-02 ARAY Grant (A) +61,659 $0 EDGAR
2020-11-05 ARAY Sell (S) −10,653 -$32.2K EDGAR
2020-10-06 ARAY Sell (S) −8,641 -$21.0K EDGAR
2020-01-06 ARAY Sell (S) −10,563 -$28.5K EDGAR
2019-11-04 ARAY Grant (A) +88,870 $0 EDGAR
2019-10-03 ARAY Sell (S) −8,901 -$24.2K EDGAR
Showing 5160 of 76
Page 6 of 8
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.