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Atossa Therapeutics, Inc. (ATOS)

Atossa Therapeutics, Inc. (ATOS) Insider Trading

Directors, officers and holders of more than 10% of ATOS report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.

Recent Form 4 transactions

The 22 most recent of 22 transactions on file: 2 with code P, 0 with code S and 20 with other codes.

DateInsiderCodeShares
May 12, 2026Galli Stephen JA Award10,000
May 12, 2026Steinhart Richard IA Award10,000
May 12, 2026Chen Shu-ChihA Award10,000
May 12, 2026Cigler TessaA Award10,000
May 12, 2026Remmel H. LawrenceA Award10,000
May 12, 2026Finn JonathanA Award10,000
Mar 26, 2026Daniel Mark JamesA Award63,000
Jan 20, 2026QUAY STEVEN CA Award950,000
Jan 20, 2026QUAY STEVEN CA Award950,000
Jan 20, 2026QUAY STEVEN CA Award22,112
Jan 20, 2026QUAY STEVEN CA Award21,680
Oct 14, 2025Daniel Mark JamesA Award578,000
May 21, 2025QUAY STEVEN CP Purchase749
May 15, 2025Steinhart Richard IA Award125,000
May 15, 2025Finn JonathanA Award125,000
May 15, 2025QUAY STEVEN CA Award1,366,062
May 15, 2025Chen Shu-ChihA Award125,000
May 15, 2025Rees HeatherA Award543,785
May 15, 2025Galli Stephen JA Award125,000
May 15, 2025Remmel H. LawrenceA Award125,000
May 15, 2025Cigler TessaA Award125,000
Mar 26, 2025Remmel H. LawrenceP Purchase667

Questions about this data

Which insider transactions are open-market trades?

Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.

How quickly are insider trades reported?

A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.

Who has to file Form 4?

Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.

Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.