Security key
74587V107
PUMA BIOTECHNOLOGY, INC. - Common Stock (PBYI)
CUSIP: 74587V107
Q4 2025 13F Holders as of 31 Dec 2025
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 35,345,329
- Total reported value
- $210,235,242
- Share change
- +756,757
- Reported price per share
- $5.95
- Number of holders
- 151
- Value change
- +$5,397,552
- Number of buys
- 81
- Number of sells
- 52
- Shares outstanding
- 49,633,071
Holder snapshot
6 facts
Security identity
1 fact
Report period
Q4 2025
Institutions
151
Top holders
10
PBYI full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2026
Previous quarter: Q3 2025
PUMA BIOTECHNOLOGY, INC. SEC filings
PUMA BIOTECHNOLOGY, INC. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 74587V107
Recent filing periods:
Ownership snapshot
Top reported holders of PBYI - PUMA BIOTECHNOLOGY, INC. - Common Stock (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.
Lead holder
ACORN BIOVENTURES, L.P.
13D/G signal
ACORN BIOVENTURES, L.P.
Evidence rows
15
Latest as of
11 Nov 2025
13D/G
13F
3/4/5
Lead comparable stake: 8%
13D/G row: ACORN BIOVENTURES, L.P.
Showing 1-6 of 15 holder rows.
Quick read
ACORN BIOVENTURES, L.P. leads the comparable SEC ownership view at 8%.
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.
Comparable ownership
Top 5
ACORN BIOVENTURES, L.P.
8%
BlackRock, Inc.
5.6%
MILLENNIUM MANAGEMENT LLC
3.9%
Brian M. Stuglik
0.19%
Allison Dorval
0.15%
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 |
|---|---|---|---|---|---|
| ACORN BIOVENTURES, L.P. |
13D/G
Anders Hove
|
8%
|
$11,859,557
3,940,052 shares
|
+$1,988,442 | 31 Dec 2024 |
| BlackRock, Inc. |
13F
13D/G
Company
|
5.6%
from 13D/G
|
$18,998,527
3,577,877 shares
|
— | 30 Sep 2025 |
| MILLENNIUM MANAGEMENT LLC |
13D/G
13F
Company
|
3.9%
|
$5,701,319
1,894,126 shares
|
$0 | 31 Dec 2024 |
| Brian M. Stuglik |
3/4/5
Director
|
0.19%
|
$321,907
94,958 shares
|
-$27,459 | 13 Jun 2025 |
| Allison Dorval |
3/4/5
Director
|
0.15%
|
$256,326
75,390 shares
|
-$39,474 | 13 Jun 2025 |
| Michael Patrick Miller |
3/4/5
Director
|
0.11%
|
$262,515
54,000 shares
|
-$97,228 | 11 Nov 2025 |
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 Q4 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
151
Shares
35,345,329
Rows available
151
| Investor | Option | Weight % | Change % | Reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* 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 failed the local validity check.
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
131
Q4 2025 holders
151
Holder diff
20
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend