Security key
04746L104
LeonaBio, Inc. - Common Stock, $0.0001 par value (ATHA)
CUSIP: 04746L104
Q1 2025 13F Holders as of 31 Mar 2025
- Security type / class
- Equity / Common Stock, $0.0001 par value
- Total 13F shares
- 17,565,344
- Total 13F value
- $5,002,785
- Share change
- -358,070
- Put/Call ratio
- 31%
- SEC-reported price per share
- $0.28
- Number of holders
- 52
- Value change
- -$111,730
- Number of buys
- 9
- Number of sells
- 22
- Shares outstanding
- 9,416,558
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2025
Institutions
52
Top holders
10
ATHA full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2025
Previous quarter: Q4 2024
LeonaBio, Inc. SEC filings
LeonaBio, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 04746L104
Recent filing periods:
Ownership snapshot
Top reported holders of ATHA - LeonaBio, Inc. - Common Stock, $0.0001 par value (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
PERCEPTIVE ADVISORS LLC
Disclosed value leader
PERCEPTIVE ADVISORS LLC
Comparable rows
15/15
Latest evidence
31 Dec 2024
13F
Lead comparable stake: 57%
Showing 1-6 of 15 holder rows.
Quick read
PERCEPTIVE ADVISORS LLC leads the comparable SEC ownership view at 57%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens PERCEPTIVE ADVISORS LLC's linked filing trail.
Comparable ownership
Top 5
PERCEPTIVE ADVISORS LLC
57%
BML Capital Management, LLC
29%
VANGUARD GROUP INC
17%
Propel Bio Management, LLC
16%
Simplify Asset Management Inc.
16%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| PERCEPTIVE ADVISORS LLC |
13F
Company
|
57%
|
$3,169,919
5,402,964 shares
|
— | 31 Dec 2024 |
| BML Capital Management, LLC |
13F
Company
|
29%
|
$1,628,612
2,775,885 shares
|
— | 31 Dec 2024 |
| VANGUARD GROUP INC |
13F
Company
|
17%
|
$913,754
1,556,651 shares
|
— | 31 Dec 2024 |
| Propel Bio Management, LLC |
13F
Company
|
16%
|
$875,821
1,492,792 shares
|
— | 31 Dec 2024 |
| Simplify Asset Management Inc. |
13F
Company
|
16%
|
$875,821
1,492,792 shares
|
— | 31 Dec 2024 |
| TANG CAPITAL MANAGEMENT LLC |
13F
Company
|
6.4%
|
$352,020
600,000 shares
|
— | 31 Dec 2024 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q1 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
52
Shares
17,565,344
Rows available
52
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2025 vs Q4 2024 Across Filers
Q4 2024 holders
54
Q1 2025 holders
52
Holder diff
-2
| Investor | Q4 2024 Shares | Q1 2025 Shares | Share Diff | Share Chg % | Q4 2024 value | Q1 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend