Shigeyuki Hamamatsu

CIK: 0001379827

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)6 (15.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)2 (5.0%)

Compensation grants

Other (G, F, J, C, D, …)32 (80.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

OOMA

OOMA INC

Officer

Discretionary Trading P&L

Holdings

Transaction History (40 total)

OOMA
OOMA INC
Sep 15, 2026
Tax Payment(F)
Direct
3.1K shares at avg. $22.66$69K
OOMA
OOMA INC
Sep 10, 2026
Tax Payment(F)
Direct
3.1K shares at avg. $22.67$69K
OOMA
OOMA INC
Sep 8, 2026
Tax Payment(F)
Direct
3.2K shares at avg. $22.86$73K
OOMA
OOMA INC
Sep 1, 2026
Tax Payment(F)
Direct
3.1K shares at avg. $21.88$67K
OOMA
OOMA INC
Sep 1, 2026
Sale(S)
Direct
4.8K shares at avg. $22.33$107K
OOMA
OOMA INC
Jun 15, 2026
Tax Payment(F)
Direct
3K shares at avg. $17.15$51K
OOMA
OOMA INC
Jun 10, 2026
Tax Payment(F)
Direct
3K shares at avg. $17.53$52K
OOMA
OOMA INC
Jun 8, 2026
Tax Payment(F)
Direct
3.1K shares at avg. $16.73$52K
OOMA
OOMA INC
Jun 2, 2026
Sale(S)
Direct
27.7K shares at avg. $17.64$489K
OOMA
OOMA INC
Jun 1, 2026
Tax Payment(F)
Direct
2.9K shares at avg. $18.14$53K
OOMA
OOMA INC
Mar 15, 2026
Tax Payment(F)
Direct
2.4K shares at avg. $13.68$33K
OOMA
OOMA INC
Mar 10, 2026
Tax Payment(F)
Direct
2.3K shares at avg. $14.24$33K
OOMA
OOMA INC
Mar 8, 2026
Tax Payment(F)
Direct
2.5K shares at avg. $14.40$36K
OOMA
OOMA INC
Mar 6, 2026
Sale(S)
Direct
10.8K shares at avg. $14.22$153K
OOMA
OOMA INC
Mar 1, 2026
Tax Payment(F)
Direct
1.2K shares at avg. $12.36$15K
OOMA
OOMA INC
Mar 1, 2026
Award(A)
Direct
70K shares-
OOMA
OOMA INC
Dec 15, 2025
Tax Payment(F)
Direct
3.2K shares at avg. $11.50$37K
OOMA
OOMA INC
Dec 10, 2025
Tax Payment(F)
Direct
3.2K shares at avg. $11.39$37K
OOMA
OOMA INC
Dec 8, 2025
Tax Payment(F)
Direct
3.3K shares at avg. $12.45$41K
OOMA
OOMA INC
Dec 1, 2025
Tax Payment(F)
Direct
1.7K shares at avg. $10.98$18K
OOMA
OOMA INC
Sep 15, 2025
Tax Payment(F)
Direct
5.1K shares at avg. $12.73$64K
OOMA
OOMA INC
Sep 10, 2025
Tax Payment(F)
Direct
2.4K shares at avg. $12.51$29K
OOMA
OOMA INC
Sep 4, 2025
Sale(S)
Direct
7.3K shares at avg. $12.89$95K
OOMA
OOMA INC
Sep 1, 2025
Tax Payment(F)
Direct
1.2K shares at avg. $12.92$15K
OOMA
OOMA INC
Jun 15, 2025
Tax Payment(F)
Direct
5K shares at avg. $12.21$62K

		Type	Shares	Price		Ownership
Sep 15, 2026	OOMA OOMA INC	Tax Payment(F)	3,058	$22.66	$69,294	Direct
Sep 10, 2026	OOMA OOMA INC	Tax Payment(F)	3,058	$22.67	$69,325	Direct
Sep 8, 2026	OOMA OOMA INC	Tax Payment(F)	3,191	$22.86	$72,946	Direct
Sep 1, 2026	OOMA OOMA INC	Tax Payment(F)	3,081	$21.88	$67,412	Direct
Sep 1, 2026	OOMA OOMA INC	Sale(S)	4,807	$22.33	$107,340	Direct
Jun 15, 2026	OOMA OOMA INC	Tax Payment(F)	2,971	$17.15	$50,953	Direct
Jun 10, 2026	OOMA OOMA INC	Tax Payment(F)	2,961	$17.53	$51,906	Direct
Jun 8, 2026	OOMA OOMA INC	Tax Payment(F)	3,124	$16.73	$52,265	Direct
Jun 2, 2026	OOMA OOMA INC	Sale(S)	27,696	$17.64	$488,557	Direct
Jun 1, 2026	OOMA OOMA INC	Tax Payment(F)	2,942	$18.14	$53,368	Direct
Mar 15, 2026	OOMA OOMA INC	Tax Payment(F)	2,382	$13.68	$32,586	Direct
Mar 10, 2026	OOMA OOMA INC	Tax Payment(F)	2,345	$14.24	$33,393	Direct
Mar 8, 2026	OOMA OOMA INC	Tax Payment(F)	2,480	$14.40	$35,712	Direct
Mar 6, 2026	OOMA OOMA INC	Sale(S)	10,790	$14.22	$153,411	Direct
Mar 1, 2026	OOMA OOMA INC	Tax Payment(F)	1,200	$12.36	$14,832	Direct
Mar 1, 2026	OOMA OOMA INC	Award(A)	70,000	-	$0	Direct
Dec 15, 2025	OOMA OOMA INC	Tax Payment(F)	3,231	$11.50	$37,157	Direct
Dec 10, 2025	OOMA OOMA INC	Tax Payment(F)	3,239	$11.39	$36,892	Direct
Dec 8, 2025	OOMA OOMA INC	Tax Payment(F)	3,300	$12.45	$41,085	Direct
Dec 1, 2025	OOMA OOMA INC	Tax Payment(F)	1,678	$10.98	$18,424	Direct
Sep 15, 2025	OOMA OOMA INC	Tax Payment(F)	5,051	$12.73	$64,299	Direct
Sep 10, 2025	OOMA OOMA INC	Tax Payment(F)	2,355	$12.51	$29,461	Direct
Sep 4, 2025	OOMA OOMA INC	Sale(S)	7,335	$12.89	$94,519	Direct
Sep 1, 2025	OOMA OOMA INC	Tax Payment(F)	1,198	$12.92	$15,478	Direct
Jun 15, 2025	OOMA OOMA INC	Tax Payment(F)	5,049	$12.21	$61,648	Direct

1-25 of 40 transactions

About Hamamatsu Shigeyuki

Hamamatsu Shigeyuki (SEC CIK 0001379827) files insider reports with the SEC as SVP & Chief Financial Officer of OOMA INC (OOMA).

Signal8 holds 33 ownership filings by Hamamatsu Shigeyuki, all Form 4s, filed between Sep 4, 2024 and Sep 17, 2026. Those filings report 40 transactions, from Sep 1, 2024 to Sep 15, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Hamamatsu Shigeyuki's filings is in SUNNYVALE, CA.

Recent filings by Hamamatsu Shigeyuki

Sep 15, 2026: Tax withholding of OOMA shares (Form 4, code F).
Sep 10, 2026: Tax withholding of OOMA shares (Form 4, code F).
Sep 8, 2026: Tax withholding of OOMA shares (Form 4, code F).
Sep 1, 2026: Tax withholding of OOMA shares (Form 4, code F).
Sep 1, 2026: Open-market sale of OOMA shares (Form 4, code S).

Other insiders filing for OOMA INC (OOMA)

Sabharwal Namrata, VP & Chief Accounting Officer
Butenhoff Susan, Director
STANG ERIC B, President & CEO
Yeh Jenny C, SVP & Chief Legal Officer
Mann Russell, Director
Pearce William D, Director

How to read Form 4 transaction codes