Ticker · CUSIP 04962H506

ATOSEUR

ATOSSA THERAPEUTICS INC
···Share
Holders (tracked)
7
Combined shares
4,142,965
Combined value
$2.44M
Last close
Quarter
2025Q4
Tracked holders · last 8 quarters
+2 vs previous quarter over the last 8.
772024Q12025Q4

SEC event timeline

8 events
  1. +384,746 shares · 2025Q4
    13F
  2. +23,452 shares · 2025Q4
    13F
  3. −425,780 shares · 2025Q4
    13F
  4. +48,092 shares · 2025Q4
    13F
  5. +514,175 shares · 2025Q4
    13F
  6. −378,887 shares · 2025Q3
    13F
  7. −48,329 shares · 2025Q3
    13F
  8. −263,588 shares · 2025Q3
    13F

Insider activity

No insider transactions in the last 30 days.

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.
New positions2
Trimmed1
Exited0

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
9
$22.2M
2022Q2
10
$11.0M
2022Q3
9
$6K
2022Q4
8
$2.8M
2023Q1
7
$3.0M
2023Q2
7
$4.5M
2023Q3
7
$2.5M
2023Q4
7
$2.7M
2024Q1
7
$7.2M
2024Q2
8
$13.3M
2024Q3
6
$2.5M
2024Q4
7
$2.0M
2025Q1
5
$1.3M
2025Q2
6
$3.3M
2025Q3
5
$3.1M
2025Q4
7
$2.4M

Who owns ATOSEUR

7 super-investors · 2025Q4
Tracked stake
4.14M
shares
Combined value
$2M
% of shares outstanding
shares-out unknown
Quarter action mix
New2Added4Trim1
#ManagerSharesValue
1Renaissance Technologies2.06M$1M
2Izzy Englander
Millennium Mgmt
1.24M$733K
3Ken Griffin
Citadel Advisors
648.1K$382K
4Ken Griffin
Citadel Advisors
85.8K$51K
5Steve Cohen
Point72
48.1K$28K
6Ken Griffin
Citadel Advisors
31.8K$19K
7Two Sigma Investments23.5K$14K

Recent moves

20 transactions
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