Athira Pharma, Inc.
Athira Pharma, Inc. (ATHA) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ATHA · as of Sep 30, 2025
Ownership Breakdown
33
Institutional Holders
▼ 19 vs Q2
$7.59M
Total Inst. Value
▲ $2.30M vs Q2
3.94M
Shares Outstanding
freeFloat 77.33%
1.71M
13F Shares Held
▼ 15.84M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
ATHA largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
PERCEPTIVE ADVISORS LLC biological products, (no diagnostic substances) | 540.3K | 13.70% | 13.70% | $2.24B | Nov 14, 2025 | NEW |
BML CAPITAL MANAGEMENT, LLC biological products, (no diagnostic substances) | 323.1K | 8.19% | 8.19% | $1.34B | Nov 10, 2025 | NEW |
VANGUARD GROUP INC biological products, (no diagnostic substances) | 153.8K | 3.90% | 3.90% | $636.69M | Nov 7, 2025 | NEW |
PROPEL BIO MANAGEMENT, LLC biological products, (no diagnostic substances) | 149.3K | 3.79% | 3.79% | $618.01M | Nov 12, 2025 | NEW |
SIMPLIFY ASSET MANAGEMENT INC. biological products, (no diagnostic substances) | 149.3K | 3.79% | 3.79% | $618.01M | Oct 20, 2025 | NEW |
TANG CAPITAL MANAGEMENT LLC biological products, (no diagnostic substances) | 60.0K | 1.52% | 1.52% | $248.39M | Nov 14, 2025 | NEW |
RENAISSANCE TECHNOLOGIES LLC biological products, (no diagnostic substances) | 51.9K | 1.32% | 1.32% | $214.97M | Nov 13, 2025 | NEW |
ACADIAN ASSET MANAGEMENT LLC biological products, (no diagnostic substances) | 40.2K | 1.02% | 1.02% | $165.00M | Nov 13, 2025 | NEW |
PATHSTONE HOLDINGS, LLC biological products, (no diagnostic substances) | 38.6K | 97.89% | 97.89% | $159.83M | Nov 13, 2025 | NEW |
BLACKROCK, INC. biological products, (no diagnostic substances) | 37.6K | 95.45% | 95.45% | $155.84M | Nov 12, 2025 | NEW |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
1
Increased
+1.0K shares33
New Positions
first time holders1
Decreased
−59.1K shares15
Sold Out
fully exitedNet shares change (top 50)
58.1K
+1.0K / −59.1K
Net new holders
+18
33 new / 15 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
ATHA insider trading · insider activity
Source: SEC Form 4
9
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
CHURCH KEVIN Vice President of Discovery | May 18, 2021 | Award | 185 | $14.45 | $2.7K | 41.2K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Athira Pharma, Inc. (ATHA) is primarily owned by institutional investors, who hold approximately 43.3% of total shares outstanding. Company insiders own approximately 22.67%, while retail and public investors account for the remaining 33.99%.
The largest institutional shareholder of Athira Pharma, Inc. is PERCEPTIVE ADVISORS LLC, holding approximately 540,296 shares — equal to 13.70% of outstanding shares — as of September 30, 2025.
A total of 33 institutional investors currently hold ATHA stock, with a combined institutional value of approximately $7,594,643 as of the most recent 13F filing period.
Frequently asked questions
ATHA ownershipAthira Pharma, Inc. (ATHA) is primarily owned by institutional investors, who hold approximately 43.3% of shares. The largest shareholder is PERCEPTIVE ADVISORS LLC with a 13.70% stake. Company insiders hold 22.67%. Data sourced from SEC Form 13F as of September 30, 2025.