Puma Biotechnology PBYI Insider Ownership

NASDAQ PBYI
$10.90 +0.14 (+1.30%)
At close: Oct 21, 2026 · 4:00 PM EDT

Insider Holdings by Owner

8.47Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
16.30%
▼-0.155% pp QoQ
Shares Held by Insiders
8.33Mn
filed for Sep 2026
▼-0.94% QoQ
Shares Outstanding
51.10Mn
51,102,687 shares
Direct Holdings
8.33Mn
Indirect: 0
Net Shares Traded (QoQ)
-79.05K
net selling in Sep 2026
Insiders Holding Shares
12
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest —
Average ownership —
Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold
Latest quarter —
Net over range —
Buying quarters —

Insider Ownership Summary

Over the past 12 months, Puma Biotechnology insiders sold $2.12 million of stock on the open market (283.45K shares) and made no open-market purchases.

Form 4 Holdings

Insiders Holding PBYI

Insiders 12
Shares held 8.47Mn
Of outstanding 16.57%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Alan H Auerbach President And Ceo 7,261,671 0 7,261,671 85.7% 08 Jul, 2026
2 Maximo F Nougues Chief Financial Officer 230,637 0 230,637 2.7% 08 Jul, 2026
3 Douglas M Hunt Officer 196,841 0 196,841 2.3% 08 Jul, 2026
4 Jeffrey Jerome Ludwig Chief Commercial Officer 156,792 0 156,792 1.9% 11 Feb, 2025
5 Alvin F Wong Chief Scientific Officer 141,241 0 141,241 1.7% 14 Feb, 2024
6 Brian M Stuglik Director 113,858 0 113,858 1.3% 15 Jun, 2026
7 Allison Dorval Director 90,780 0 90,780 1.1% 15 Jun, 2026
8 Michael Patrick Miller Director 81,000 0 81,000 1.0% 15 Jun, 2026
9 Jay M Moyes Director 58,322 0 58,322 0.7% 15 Jun, 2026
10 Alessandra Cesano Director 56,700 0 56,700 0.7% 16 Sep, 2026
11 Troy Edward Wilson Director 54,750 0 54,750 0.6% 16 Sep, 2026
12 Adrian Senderowicz Director 27,000 0 27,000 0.3% 15 Jun, 2026

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

568 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
14 Sep, 2026 Alessandra Cesano Director Acquired M 50,000 $2.93 $146.50K 118,850 Direct
14 Sep, 2026 Troy Edward Wilson Director Disposed S 5,000 $9.10 $45.50K 54,750 Direct
14 Sep, 2026 Alessandra Cesano Director Disposed S 62,150 $9.12 $566.99K 56,700 Direct
14 Sep, 2026 Alessandra Cesano Director Disposed M 50,000 $0.00 $0 50,000 Direct
06 Jul, 2026 Maximo F Nougues Chief Financial Officer Disposed S 9,386 $8.26 $77.56K 230,637 Direct
06 Jul, 2026 Douglas M Hunt Officer Disposed S 8,460 $8.26 $69.90K 196,841 Direct
06 Jul, 2026 Alan H Auerbach President And Ceo Disposed S 44,058 $8.26 $364.05K 7,261,671 Direct
11 Jun, 2026 Troy Edward Wilson Director Acquired A 27,000 $0.00 $0 70,550 Direct
11 Jun, 2026 Brian M Stuglik Director Acquired A 27,000 $0.00 $0 121,958 Direct
11 Jun, 2026 Michael Patrick Miller Director Acquired A 27,000 $0.00 $0 81,000 Direct
11 Jun, 2026 Jay M Moyes Director Acquired A 27,000 $0.00 $0 80,322 Direct
11 Jun, 2026 Adrian Senderowicz Director Acquired A 27,000 $0.00 $0 54,000 Direct
11 Jun, 2026 Allison Dorval Director Acquired A 27,000 $0.00 $0 102,390 Direct
11 Jun, 2026 Alessandra Cesano Director Acquired A 27,000 $0.00 $0 68,850 Direct
12 Jun, 2026 Allison Dorval Director Disposed S 11,610 $7.20 $83.58K 90,780 Direct
12 Jun, 2026 Brian M Stuglik Director Disposed S 8,100 $7.20 $58.31K 113,858 Direct
12 Jun, 2026 Jay M Moyes Director Disposed S 22,000 $7.22 $158.80K 58,322 Direct
12 Jun, 2026 Adrian Senderowicz Director Disposed S 27,000 $7.20 $194.31K 27,000 Direct
12 Jun, 2026 Troy Edward Wilson Director Disposed S 10,800 $7.20 $77.75K 59,750 Direct
18 Feb, 2026 Alan H Auerbach President And Ceo Acquired A 159,778 $0.00 $0 7,305,729 Direct