PBYI · Insider trading · 13F holders · Congress trades
Puma Biotechnology, Inc. (PBYI)
Who is buying and selling PBYI: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 5
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $612K
- Congress trades, 12 months
- 2
PBYI at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 2 PBYI insiders filed 2 sales worth $612K on SEC Form 4, and no open-market purchases; 2 of the sales were pre-planned under Rule 10b5-1.
- 5 13F filers hold PBYI among their 50 largest positions, worth $36.3M combined. The biggest bets by portfolio weight are Acorn Capital Advisors, LLC (9.1%), SummerHaven Investment Management, LLC (0.6%) and Haven Private, LLC (0.6%). In their latest 13Fs, 1 manager opened a new position and 0 added to one.
- Members of Congress have disclosed 5 PBYI trades since 2014, 1 purchase and 1 sale in the past year; the latest was Donna E. Shalala (D-FL), selling $1K–15K on May 15, 2019.
- PBYI last closed at $10.54 on Oct 29, 2026.
PBYI insider trading
Between Aug 1, 2026 and Oct 29, 2026, 2 PBYI insiders filed 2 sales worth $612K on SEC Form 4, and no open-market purchases; 2 of the sales were pre-planned under Rule 10b5-1.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Sep 16, 2026 | Cesano Alessandra | Director | Sale10b5-1 | 62,150 | $9.12 | $567K | SEC |
| Sep 16, 2026 | Wilson Troy Edward | Director | Sale10b5-1 | 5,000 | $9.10 | $46K | SEC |
Who owns PBYI? Hedge funds and superinvestors
5 13F filers hold PBYI among their 50 largest positions, worth $36.3M combined. The biggest bets by portfolio weight are Acorn Capital Advisors, LLC (9.1%), SummerHaven Investment Management, LLC (0.6%) and Haven Private, LLC (0.6%). In their latest 13Fs, 1 manager opened a new position and 0 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Acorn Capital Advisors, LLCHedge fund | 9.1% | $33.5M | 4,131,299 | +0.0% shares | Q2 2026 |
| Haven Private, LLCWealth manager | 0.6% | $1.5M | 146,700 | -1.2% shares | Q3 2026 |
| SummerHaven Investment Management, LLCAsset manager | 0.6% | $1.1M | 114,315 | — | Q3 2026 |
| Spark Investment Management LLCHedge fund | 0.3% | $138K | 17,000 | New | Q2 2026 |
| Ball & Co Wealth Management Inc.Wealth manager | 0.0% | $24K | 3,066 | — | Q2 2026 |
Each manager counts with its latest 13F (Q3 2026: 2, Q2 2026: 3). Screen PBYI in the grand portfolio →
PBYI stock trades by members of Congress
Members of Congress have disclosed 5 PBYI trades since 2014, 1 purchase and 1 sale in the past year; the latest was Donna E. Shalala (D-FL), selling $1K–15K on May 15, 2019.
| Filed | Member | Trade | Amount | Traded | Since |
|---|---|---|---|---|---|
| Apr 27, 2020 | Donna E. ShalalaD-FL · House | Sale | $1K–15K | May 15, 2019 | -36.2% |
| Apr 27, 2020 | Donna E. ShalalaD-FL · House | Buy | $1K–15K | Jan 23, 2019 | -56.9% |
| Oct 13, 2014 | Nick J. Rahall IID-WV · House | Sale | $1K–15K | Sep 26, 2014 | -95.7% |
| Aug 14, 2014 | Nick J. Rahall IID-WV · House | Buy | $1K–15K | Jul 30, 2014 | -95.3% |
| Aug 14, 2014 | Nick J. Rahall IID-WV · House | Buy | $15K–50K | Jul 24, 2014 | -95.0% |
2 members have traded PBYI: Donna E. Shalala, Nick J. Rahall II.
PBYI questions and answers
Are insiders buying PBYI stock?
Between Aug 1, 2026 and Oct 29, 2026, 2 PBYI insiders filed 2 sales worth $612K on SEC Form 4, and no open-market purchases; 2 of the sales were pre-planned under Rule 10b5-1.
Which hedge funds own PBYI?
5 13F filers hold PBYI among their 50 largest positions, worth $36.3M combined. The biggest bets by portfolio weight are Acorn Capital Advisors, LLC (9.1%), SummerHaven Investment Management, LLC (0.6%) and Haven Private, LLC (0.6%). In their latest 13Fs, 1 manager opened a new position and 0 added to one.
Has Congress traded PBYI?
Members of Congress have disclosed 5 PBYI trades since 2014, 1 purchase and 1 sale in the past year; the latest was Donna E. Shalala (D-FL), selling $1K–15K on May 15, 2019.
Who is the largest holder of PBYI?
Among 13F filers, Acorn Capital Advisors, LLC reports the largest PBYI position, $33.5M (4,131,299 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Acorn Capital Advisors, LLC's: 9.1% of its portfolio.
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