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ATOS ATOSSA THERAPEUTICS INC

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COM (common), issuer CIK 1488039

31 managers (33 13F filers) reported a position in ATOS shares at 2026-03-31, 1,239,979 shares in all. 30 filers opened a position and 1 filer sold out during the quarter.

Managers
31
13F filers
33
New
30
Added
0
Reduced
0
Sold out
1
Shares held by filers
1,239,979

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
VANGUARD GROUP INCgroup of 3 filers holding404,420$2.13MnewTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC255,134$1.34M<0.01%new13F-HR/ATimelineGroup
BlackRock, Inc.in group BlackRock, Inc.133,169$700K<0.01%new13F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC109,007$573K<0.01%new13F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC97,061$511K<0.01%new13F-HRTimelineGroup
UBS Group AGin group UBS Group AG92,034$484K<0.01%new13F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC66,739$351K<0.01%new13F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP39,761$209K<0.01%new13F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP19,224$101K<0.01%new13F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY16,202$85.2K<0.01%new13F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP2,061$9.73K<0.01%new13F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…863$4.54K<0.01%new13F-HRTimelineGroup
GROUP ONE TRADING LLC609$3.2K<0.01%new13F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.587$3.09K<0.01%new13F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA644$3K<0.01%new13F-HRTimelineGroup
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…353$1.86K<0.01%new13F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO383$1.8K<0.01%new13F-HR/ATimelineGroup
NewEdge Advisors, LLC333$1.75K<0.01%new13F-HR/ATimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN296$1.56K<0.01%new13F-HR/ATimelineGroup
Avion Wealth318$1K<0.01%new13F-HRTimeline
Robinswood Financial LLC170$894<0.01%new13F-HR/ATimeline
SBI Securities Co., Ltd.113$594<0.01%new13F-HRTimeline
HARBOUR INVESTMENTS, INC.110$579<0.01%new13F-HRTimeline
TD Waterhouse Canada Inc.103$525<0.01%new13F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS98$515<0.01%new13F-HRTimelineGroup
North Star Investment Management Corp.80$421<0.01%new13F-HRTimeline
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…46$242<0.01%new13F-HRTimelineGroup
Allworth Financial LP46$242<0.01%new13F-HRTimeline
Napier Financial, LLC6$32<0.01%new13F-HRTimeline
Bogart Wealth, LLC5$26<0.01%new13F-HRTimeline
Clearstead Advisors, LLC4$22<0.01%new13F-HRTimeline