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Buy Day today: Neutral (51) Mixed market breadth · no major macro event
ATOM

Atomera Inc

Technology · Semiconductor Equipment & Materials

4.10$ +3.5% vs. previous close Closing price · As of: Sep 18, 2026

Ownership

Ownership Structure

Who owns Atomera Inc (ATOM)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 96.7% of the shares are freely tradable; institutional investors hold 42.1%.

Institutional ownership ?Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings. 42.1%
Insiders ?Share of the stock held by the executives, founders and major shareholders of the company itself. 3.6%
Float ?Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders. 96.7%
Short % of float ?Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices. 17.3%
Shares Outstanding ?Total number of shares issued. Price times share count gives market cap. 39Mio.

Largest Shareholders

Institutions

Institutions ATOM
Name Stake (%) Shares Change (%) Date
BlackRock Inc 6.08 2,372,844 +20.3 03/31/2026
D. E. Shaw & Co LP 4.84 1,890,019 +93.7 06/30/2026
Avenir Corporation 3.74 1,461,415 +137.9 03/31/2026
Vanguard Capital Management, LLC 3.30 1,288,161 +0.0 03/31/2026
Baird Financial Group, Inc. 3.27 1,277,680 +309.4 03/31/2026
Geode Capital Management, LLC 1.97 769,697 +3.9 03/31/2026
Quantum Private Wealth, LLC 1.91 743,895 +24.3 06/30/2026
Two Sigma Investments LLC 1.71 667,667 +26.0 06/30/2026

Funds

Funds ATOM
Name Stake (%) Shares Change (%) Date
Vanguard MStar Total Stk Mkt Idx Invest 3.00 1,171,475 +0.0 07/31/2026
iShares Russell 2000 ETF 2.55 993,975 -0.6 08/31/2026

Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.

Insider holdings

Insider holdings ATOM
Person Role Shares Value As of Type
Bibaud Scott A. CEO and President 682,005 2,796,220 $ Sep 1, 2026 direct
Mears Robert J Chief Technology Officer 258,036 1,057,948 $ Sep 2, 2026 direct
Laurencio Francis CFO 246,849 1,012,081 $ Sep 1, 2026 direct

Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.

Insiders

Insider Transactions

Insider Transactions
Date Person Role Type Shares Price Value
Sep 2, 2026 Mears Robert J Chief Technology Officer Sell 6,312 3.87 24,427
Sep 1, 2026 Laurencio Francis CFO Sell 884 4.05 3,580
Sep 1, 2026 Laurencio Francis CFO Sell 2,085 4.05 8,444
Sep 1, 2026 Laurencio Francis CFO Sell 1,020 4.05 4,131
Sep 1, 2026 Laurencio Francis CFO Sell 2,515 4.05 10,186
Sep 1, 2026 Mears Robert J Chief Technology Officer Sell 771 4.05 3,123
Sep 1, 2026 Mears Robert J Chief Technology Officer Sell 1,515 4.05 6,136
Sep 1, 2026 Mears Robert J Chief Technology Officer Sell 889 4.05 3,600
Sep 1, 2026 Mears Robert J Chief Technology Officer Sell 2,192 4.05 8,878
Sep 1, 2026 Mears Robert J Chief Technology Officer Sell 1,000 4.05 4,050
Sep 1, 2026 Bibaud Scott A. CEO and President Sell 5,446 4.05 22,056
Sep 1, 2026 Bibaud Scott A. CEO and President Sell 4,515 4.05 18,286
Sep 1, 2026 Bibaud Scott A. CEO and President Sell 1,988 4.05 8,051
Sep 1, 2026 Bibaud Scott A. CEO and President Sell 1,807 4.05 7,318
Aug 3, 2026 Mears Robert J Chief Technology Officer Sell 1,000 5.05 5,050

Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →

Data as of: September 18, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)

Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.

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