SUTRO BIOPHARMA, INC. (STRO)

Latest Insider Confidence Score

2026Q1

53.2
Bullish

Company insider confidence (by quarter)

2018Q3 2026Q1

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
Celgene Corp /de/ — 514,967 Oct 2, 2018
Kaneko Yasunori — 514,211 Oct 3, 2018
Skyline Venture Partners V LP — 514,211 Oct 3, 2018
Skyline Venture Management V, LLC — 514,211 Oct 3, 2018
Nohra Guy P — 514,211 Oct 1, 2018

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Mar 4, 2026 Mar 6, 2026 Pauling David Chief Admin. Ofcr. & GC Sell 47.5 -277 -2.76% ✗ $5.9K
Mar 4, 2026 Mar 6, 2026 Chung Jane CEO Sell 47.5 -282 -1.31% ✗ $6K
Mar 1, 2026 Mar 3, 2026 Pauling David Chief Admin. Ofcr. & GC Sell 46.3 -1,521 -8.08% ✗ $31.2K
Mar 1, 2026 Mar 3, 2026 Gerber Hans-Peter CHIEF SCIENTIFIC OFFICER Sell 46.3 -1,633 -8.60% ✗ $33.5K
Mar 2, 2026 Mar 3, 2026 Chow Gregory K. CFO Neutral 52.5 - 0.00% ✗ -
Mar 1, 2026 Mar 3, 2026 Chung Jane CEO Sell 42.5 -4,050 -9.97% ✗ $83.1K
Dec 23, 2025 Dec 29, 2025 Wigginton Jon Marc Director Neutral 52.5 - 0.00% ✗ -
Dec 23, 2025 Dec 29, 2025 Petree Daniel H Director Neutral 52.5 - 0.00% ✗ -
Dec 23, 2025 Dec 29, 2025 PANEK JAMES P Director Neutral 52.5 - 0.00% ✗ -
Dec 23, 2025 Dec 29, 2025 MATSUI CONNIE Director Neutral 52.5 - 0.00% ✗ -
Dec 23, 2025 Dec 29, 2025 Lobacki Joseph M Director Neutral 52.5 - 0.00% ✗ -
Dec 23, 2025 Dec 29, 2025 Jagpal Sukhi Director Neutral 52.5 - 0.00% ✗ -
Dec 23, 2025 Dec 29, 2025 Hunter Heidi Director Neutral 52.5 - 0.00% ✗ -
Dec 23, 2025 Dec 29, 2025 Dybbs Michael Director Neutral 52.5 - 0.00% ✗ -
Dec 23, 2025 Dec 29, 2025 Pauling David Chief Admin. Ofcr. & GC Neutral 52.5 - 0.00% ✗ -
Dec 23, 2025 Dec 29, 2025 Gerber Hans-Peter CHIEF SCIENTIFIC OFFICER Neutral 52.5 - 0.00% ✗ -
Dec 23, 2025 Dec 29, 2025 Chow Gregory K. CFO Neutral 52.5 - 0.00% ✗ -
Dec 12, 2025 Dec 16, 2025 Chung Jane CEO Sell 47.5 -894 -6.05% ✗ $7.2K
Oct 15, 2025 Oct 16, 2025 Gerber Hans-Peter CHIEF SCIENTIFIC OFFICER Buy 91.3 +17,000 31.00% ✗ $13.6K
Oct 15, 2025 Oct 16, 2025 Chow Gregory K. CFO Buy 91.3 +19,750 100.00% ✗ $16K
Oct 15, 2025 Oct 16, 2025 Chung Jane CEO Buy 91.3 +12,500 11.33% ✗ $10K
Oct 15, 2025 Oct 16, 2025 MATSUI CONNIE Director Buy 91.3 +50,000 100.00% ✗ $40K
Oct 15, 2025 Oct 16, 2025 Pauling David Chief Admin. Ofcr. & GC Buy 90.0 +12,504 21.11% ✗ $10K
Sep 18, 2025 Sep 22, 2025 Gerber Hans-Peter CHIEF SCIENTIFIC OFFICER Sell 46.3 -13,417 -19.66% ✗ $12.1K
Sep 12, 2025 Pauling David Chief Admin. Ofcr. & GC Neutral 52.5 - 0.00% ✗ -
Jul 8, 2025 Aug 26, 2025 Leyman Barbara Chief Business Officer Sell 47.5 -8,944 -35.78% ✗ $7K
Aug 9, 2025 Aug 26, 2025 Chung Jane CEO Sell 47.5 -6,708 -5.73% ✗ $5.4K
Jun 6, 2025 Jun 10, 2025 Wigginton Jon Marc Director Neutral 52.5 - 0.00% ✗ -
Jun 6, 2025 Jun 10, 2025 Petree Daniel H Director Neutral 52.5 - 0.00% ✗ -
Jun 6, 2025 Jun 10, 2025 PANEK JAMES P Director Neutral 52.5 - 0.00% ✗ -
Jun 6, 2025 Jun 10, 2025 MATSUI CONNIE Director Neutral 52.5 - 0.00% ✗ -
Jun 6, 2025 Jun 10, 2025 Lobacki Joseph M Director Neutral 52.5 - 0.00% ✗ -
Jun 6, 2025 Jun 10, 2025 Jagpal Sukhi Director Neutral 52.5 - 0.00% ✗ -
Jun 6, 2025 Jun 10, 2025 Hunter Heidi Director Neutral 52.5 - 0.00% ✗ -
Jun 6, 2025 Jun 10, 2025 Dybbs Michael Director Neutral 52.5 - 0.00% ✗ -
Jun 2, 2025 Jun 2, 2025 Chow Gregory K. CFO Neutral 52.5 - 0.00% ✗ -
Jun 2, 2025 Chow Gregory K. CFO Neutral 52.5 - 0.00% ✗ -
May 15, 2025 May 19, 2025 ALBINI EDWARD C CFO Sell 46.3 -15,995 -9.05% ✗ $14.1K
May 1, 2025 May 5, 2025 FITZPATRICK LINDA A CHIEF PEOPLE & COMM. OFFICER Sell 46.3 -13,538 -9.42% ✗ $14.5K
May 1, 2025 May 5, 2025 Srinivasan Venkatesh CHIEF TECH OP OFFICER Sell 47.5 -894 -1.64% ✗ $956.6
May 1, 2025 May 5, 2025 Borgman Anne Elizabeth CHIEF MEDICAL OFFICER Sell 46.3 -24,709 -20.23% ✗ $26.4K
Apr 11, 2025 Apr 15, 2025 Srinivasan Venkatesh CHIEF TECH OP OFFICER Sell 47.5 -7,603 -12.74% ✗ $4.6K
Apr 4, 2025 Apr 8, 2025 Chung Jane CEO Neutral 52.5 - 0.00% ✗ -
Apr 4, 2025 Apr 8, 2025 Gerber Hans-Peter CHIEF SCIENTIFIC OFFICER Neutral 52.5 - 0.00% ✗ -
Apr 4, 2025 Apr 8, 2025 Leyman Barbara Chief Business Dev. Officer Neutral 52.5 - 0.00% ✗ -
Apr 4, 2025 Apr 8, 2025 Srinivasan Venkatesh CHIEF TECH OP OFFICER Neutral 52.5 - 0.00% ✗ -
Apr 4, 2025 Apr 8, 2025 Pauling David Chief Admin. Ofcr. & GC Neutral 52.5 - 0.00% ✗ -
Apr 8, 2025 Pauling David Chief Admin. Ofcr. & GC Neutral 52.5 - 0.00% ✗ -
Mar 5, 2025 Mar 7, 2025 NEWELL WILLIAM J CEO Sell 47.5 -6,708 -1.61% ✗ $9.1K
Mar 5, 2025 Mar 7, 2025 FITZPATRICK LINDA A CHIEF PEOPLE & COMM. OFFICER Sell 47.5 -3,594 -3.28% ✗ $4.9K
Mar 5, 2025 Mar 7, 2025 ALBINI EDWARD C CFO Sell 47.5 -3,594 -2.65% ✗ $4.9K
Mar 4, 2025 Mar 6, 2025 ALBINI EDWARD C CFO Sell 47.5 -3,748 -2.87% ✗ $5.3K
Mar 4, 2025 Mar 6, 2025 FITZPATRICK LINDA A CHIEF PEOPLE & COMM. OFFICER Sell 47.5 -3,748 -3.59% ✗ $5.3K
Mar 4, 2025 Mar 6, 2025 NEWELL WILLIAM J CEO Sell 46.3 -11,136 -2.73% ✗ $15.8K
Mar 4, 2025 Mar 6, 2025 Chung Jane COO Sell 47.5 -2,334 -2.32% ✗ $3.3K
Mar 1, 2025 Mar 4, 2025 ALBINI EDWARD C CFO Sell 46.3 -10,320 -7.83% ✗ $16.4K
Mar 1, 2025 Mar 4, 2025 Chung Jane COO Sell 46.3 -9,450 -9.25% ✗ $15K
Mar 1, 2025 Mar 4, 2025 FITZPATRICK LINDA A CHIEF PEOPLE & COMM. OFFICER Sell 46.3 -8,327 -8.04% ✗ $13.2K
Mar 1, 2025 Mar 4, 2025 Gerber Hans-Peter CHIEF SCIENTIFIC OFFICER Sell 47.5 -4,621 -13.06% ✗ $7.3K
Mar 1, 2025 Mar 4, 2025 NEWELL WILLIAM J CEO Sell 46.3 -25,203 -6.27% ✗ $40.1K
Mar 1, 2025 Mar 4, 2025 Srinivasan Venkatesh CHIEF TECH OP OFFICER Sell 47.5 -4,672 -10.84% ✗ $7.4K
Feb 28, 2025 Mar 4, 2025 Borgman Anne Elizabeth CHIEF MEDICAL OFFICER Sell 46.3 -20,026 -16.75% ✗ $31.8K
Dec 1, 2024 Dec 3, 2024 Chung Jane COO Sell 46.3 -8,920 -11.25% ✗ $24K
Sep 18, 2024 Sep 20, 2024 Gerber Hans-Peter CHIEF SCIENTIFIC OFFICER Sell 42.5 -13,380 -35.68% ✗ $52.9K
Aug 9, 2024 Aug 13, 2024 Chung Jane COO Sell 46.3 -6,689 -10.97% ✗ $20.9K
Aug 8, 2024 Aug 12, 2024 Jagpal Sukhi Director Neutral 52.5 - 0.00% ✗ -
Aug 12, 2024 Jagpal Sukhi Director Neutral 52.5 - 0.00% ✗ -
Jul 8, 2024 Jul 10, 2024 Leyman Barbara Chief Business Dev. Officer Neutral 52.5 - 0.00% ✗ -
Jul 10, 2024 Leyman Barbara Chief Business Dev. Officer Neutral 52.5 - 0.00% ✗ -
Jun 6, 2024 Jun 10, 2024 Wigginton Jon Marc Director Neutral 52.5 - 0.00% ✗ -
Jun 6, 2024 Jun 10, 2024 Petree Daniel H Director Neutral 52.5 - 0.00% ✗ -
Jun 6, 2024 Jun 10, 2024 PANEK JAMES P Director Neutral 52.5 - 0.00% ✗ -
Jun 6, 2024 Jun 10, 2024 MATSUI CONNIE Director Neutral 52.5 - 0.00% ✗ -
Jun 6, 2024 Jun 10, 2024 Lobacki Joseph M Director Neutral 52.5 - 0.00% ✗ -
Jun 6, 2024 Jun 10, 2024 Hunter Heidi Director Neutral 52.5 - 0.00% ✗ -
Jun 6, 2024 Jun 10, 2024 Freund John Gordon Director Neutral 52.5 - 0.00% ✗ -
Jun 6, 2024 Jun 10, 2024 Dybbs Michael Director Neutral 52.5 - 0.00% ✗ -
May 1, 2024 May 3, 2024 Srinivasan Venkatesh CHIEF TECH OP OFFICER Sell 47.5 -892 -2.73% ✗ $3.3K
Apr 11, 2024 Apr 12, 2024 Srinivasan Venkatesh CHIEF TECH OP OFFICER Sell 46.3 -7,582 -20.11% ✗ $34.1K
Mar 5, 2024 Mar 22, 2024 NEWELL WILLIAM J CEO Neutral 52.5 - 0.00% ✗ -
Mar 5, 2024 Mar 22, 2024 FITZPATRICK LINDA A CHIEF PEOPLE & COMM. OFFICER Neutral 52.5 - 0.00% ✗ -
Mar 5, 2024 Mar 22, 2024 ALBINI EDWARD C CFO Neutral 52.5 - 0.00% ✗ -
Mar 5, 2024 Mar 7, 2024 FITZPATRICK LINDA A CHIEF PEOPLE & COMM. OFFICER Sell 46.3 -3,108 -3.60% ✗ $14.1K
Mar 5, 2024 Mar 7, 2024 Srinivasan Venkatesh CHIEF TECH OP OFFICER Neutral 52.5 - 0.00% ✗ -
Mar 5, 2024 Mar 7, 2024 NEWELL WILLIAM J CEO Sell 46.3 -6,690 -1.95% ✗ $30.4K
Mar 5, 2024 Mar 7, 2024 Gerber Hans-Peter CHIEF SCIENTIFIC OFFICER Neutral 52.5 - 0.00% ✗ -
Mar 5, 2024 Mar 7, 2024 Chung Jane COO Neutral 52.5 - 0.00% ✗ -
Mar 5, 2024 Mar 7, 2024 Borgman Anne Elizabeth CHIEF MEDICAL OFFICER Neutral 52.5 - 0.00% ✗ -
Mar 5, 2024 Mar 7, 2024 ALBINI EDWARD C CFO Sell 46.3 -3,100 -2.82% ✗ $14.1K
Mar 4, 2024 Mar 6, 2024 NEWELL WILLIAM J CEO Sell 42.5 -11,105 -3.31% ✗ $53.2K
Mar 4, 2024 Mar 6, 2024 FITZPATRICK LINDA A CHIEF PEOPLE & COMM. OFFICER Sell 46.3 -3,739 -4.59% ✗ $17.9K
Mar 4, 2024 Mar 6, 2024 Chung Jane COO Sell 46.3 -2,209 -4.97% ✗ $10.6K
Mar 4, 2024 Mar 6, 2024 ALBINI EDWARD C CFO Sell 46.3 -3,472 -3.32% ✗ $16.6K
Mar 1, 2024 Mar 5, 2024 Srinivasan Venkatesh CHIEF TECH OP OFFICER Sell 46.3 -2,049 -11.07% ✗ $10.1K
Mar 1, 2024 Mar 5, 2024 NEWELL WILLIAM J CEO Sell 46.3 -8,559 -2.73% ✗ $42.4K
Mar 1, 2024 Mar 5, 2024 FITZPATRICK LINDA A CHIEF PEOPLE & COMM. OFFICER Sell 46.3 -2,511 -3.36% ✗ $12.4K
Mar 1, 2024 Mar 5, 2024 Chung Jane COO Sell 46.3 -2,038 -5.28% ✗ $10.1K
Mar 1, 2024 Mar 5, 2024 ALBINI EDWARD C CFO Sell 46.3 -3,227 -3.27% ✗ $16K
Feb 29, 2024 Mar 4, 2024 Borgman Anne Elizabeth CHIEF MEDICAL OFFICER Sell 42.5 -13,126 -35.00% ✗ $64.4K
Jan 29, 2024 Jan 31, 2024 NEWELL WILLIAM J CEO Sell 46.3 -5,634 -1.91% ✗ $28.1K