$ATOM

$2.92 +$0.05 (1.74%) Close

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

Ownership

13F as of Q2 2026 · 39.0M shares outstanding

Who owns ATOM?

By type of holder

Institutions 53.6% Insiders 6.6% Everyone else 39.9%

Concentration Top 10 holders own 35.0%

BlackRock, Inc. 7.7% · D. E. Shaw & Co., Inc. 4.8%

Institutional ownership

53.6%

+12.3 pts vs last qtr

Institutional holders

121

+13 vs last qtr

Net shares bought

+4.8M

by institutions in Q2 2026

New / sold out

31 / 18

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

UBS Group AG +1.2M
D. E. Shaw & Co., Inc. +914.4K

Biggest sellers in Q2 2026

Citadel Advisors LLC −828.1K
Arosa Capital Management LP SOLD OUT −490.0K

Who is planning to sell?

Notices of proposed sale, last 12 months

$1.89M

23 notices from 6 people

Shares covered

253.8K

0.65% of the company

Arranged in advance

57%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Robert Mears Officer 10b5-1 $588K
Scott A Bibaud Officer $468K

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, FY2021–FY2025

+37.1%

+8.21% a year

Each share's claim on the business

−27.1%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $19.2M

over 5 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+ years61% 3–5 years7% 1–3 years20% Under 1 year12%

Quarterly turnover

27.6%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting ATOM on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	3.0M	7.66%	+617.6K (+26.0%)	≤2021	0.0%
Shares held by quarter Peak holding3.0M (Q2'26) Change over 8 quarters+2.6M Share of the company7.660% BlackRock, Inc.'s full portfolio →
DE D. E. Shaw & Co., Inc.	1.9M	4.84%	+914.4K (+93.7%)	2025	0.0%
Shares held by quarter Peak holding1.9M (Q2'26) Change over 8 quarters+1.9M Share of the company4.840% D. E. Shaw & Co., Inc.'s full portfolio →

BlackRock, Inc.

3.0M

% of company

7.66%

Change vs last qtr

+617.6K (+26.0%)

Held since

≤2021

D. E. Shaw & Co., Inc.

1.9M

% of company

4.84%

Change vs last qtr

+914.4K (+93.7%)

Held since

2025

28 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting ATOM on Form N-PORT; together they hold 12.4% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$10.2M	1.2M	3.00%	0.00%	June 30, 2026
IR iShares Russell 2000 ETF iShares Trust	$8.79M	1.0M	2.59%	0.01%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$10.2M

% of company

3.00%

% of the fund

0.00%

As of

June 30, 2026

iShares Russell 2000 ETF

iShares Trust

Position value

$8.79M

% of company

2.59%

% of the fund

0.01%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Atomera 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
GJ Gerber John Insider	949.2K	2.43%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company2.430% Gerber John's insider activity →
BS Bibaud Scott A. Insider	682.0K	1.75%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company1.750% Bibaud Scott A.'s insider activity →

Gerber John

Insider

949.2K

% of company

2.43%

Change vs last qtr

—

Held since

—

Bibaud Scott A.

Insider

682.0K

% of company

1.75%

Change vs last qtr

—

Held since

—

6 more holders behind a free account

See every insider and 5%+ holder of Atomera Inc.

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