$GSIT

$4.50 +$0.10 (2.27%) Close

$GSIT Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 38.4M shares outstanding

Who owns GSIT?

By type of holder

Institutions 35.5% Insiders 13.7% Everyone else 50.8%

Concentration Top 10 holders own 40.8%

Shu Lee-Lean 9.0% · BlackRock, Inc. 6.2%

Institutional ownership

35.5%

+9.9 pts vs last qtr

Institutional holders

+17 vs last qtr

Net shares bought

+3.8M

by institutions in Q2 2026

New / sold out

36 / 19

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

BlackRock, Inc. +1.9M
Marshall Wace, LLP +483.7K

Biggest sellers in Q2 2026

Susquehanna International Group, LLP SOLD OUT −464.0K
Jane Street Group, LLC −229.8K

Who is planning to sell?

Notices of proposed sale, last 12 months

$9.9M

20 notices from 8 people

Shares covered

985.0K

2.56% of the company

Arranged in advance

22%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Chuang Patrick T Officer $2.58M
Shu Lee-Lean Pres. ceo and chairman 10b5-1 $2.13M

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2017–FY2026

+54.2%

+4.93% a year

Each share's claim on the business

−35.1%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$7.22M vs $25M

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years44% 3–5 years3% 1–3 years26% Under 1 year28%

Quarterly turnover

42.1%

of institutional shares changed hands

Top 10 managers, median time held

2.8 years

Super Investors

Investment managers reporting GSIT on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	2.4M	6.24%	+1.9M (+341.1%)	≤2021	0.0%
Shares held by quarter Peak holding2.4M (Q2'26) Change over 8 quarters+2.3M Share of the company6.240% BlackRock, Inc.'s full portfolio →
VC Vanguard Capital Management LLC	1.4M	3.51%	+71.9K (+5.6%)	≤2021	0.0%
Shares held by quarter Peak holding1.4M (Q2'26) Change over 8 quarters+1.4M Share of the company3.510% Vanguard Capital Management LLC's full portfolio →

BlackRock, Inc.

2.4M

% of company

6.24%

Change vs last qtr

+1.9M (+341.1%)

Held since

≤2021

Vanguard Capital Management LLC

1.4M

% of company

3.51%

Change vs last qtr

+71.9K (+5.6%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding GSI Technology Inc, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting GSIT on Form N-PORT; together they hold 12.7% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$7.57M	979.8K	2.55%	0.00%	June 30, 2026
IR iShares Russell 2000 ETF iShares Trust	$6.93M	896.4K	2.33%	0.01%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$7.57M

% of company

2.55%

% of the fund

0.00%

As of

June 30, 2026

iShares Russell 2000 ETF

iShares Trust

Position value

$6.93M

% of company

2.33%

% of the fund

0.01%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding GSI Technology Inc and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
SL Shu Lee-Lean Insider	3.5M	9.01%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company9.010% Shu Lee-Lean's insider activity →
GB Galloway Bruce 5%+ holder 13D · 5.0%	1.8M	4.73%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company4.730% Disclosed stake13D · 5.0% View the 13D/G filing →

Shu Lee-Lean

Insider

3.5M

% of company

9.01%

Change vs last qtr

—

Held since

—

Galloway Bruce

5%+ holder13D · 5.0%

1.8M

% of company

4.73%

Change vs last qtr

—

Held since

—

11 more holders behind a free account

See every insider and 5%+ holder of GSI Technology Inc.

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