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SUTRO BIOPHARMA, INC.

STRO Net selling
CIK 0001382101 #3439 in the set updated 22 Sep 2026
Bought (120 mo)
$10.74M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$14.94M
$0.00 on a plan · $469.79K straight out of an exercise
Sold at will
$14.47M
19 of 26 sales
Net
−$4.20M
−$3.73M against sales at will

By person

25 insiders · 50 transactions
Insider
Role
Bought
Sold
Net
Holding
Worth
Change
Freund John Gordon
Director
$14.16M (3)
−$14.16M
56,327
$45.02K
Merck & Co., Inc. entity
10% owner
$10.00M (1)
+$10.00M
2,723,509
$2.18M
NEWELL WILLIAM J
CEO
$577.51K (2)
+$577.51K
492,969
$393.98K
+149.1%
Hallam Trevor
Pres. Rsrch & Cf. Sctific Ofcr
$521.32K (18) scheduled
−$521.32K
121,058
$96.75K
+251.3%
Vasquez Nicki
CHIEF PORT. STRAT & ALNCE OFCR
$133.65K (2)
−$133.65K
14,279
$11.41K
+96.4%
Shtylla Brunilda
Chief Business Officer
$125.88K (2)
−$125.88K
0
$0.00
−100.0%
MOLINA ARTURO MD
Chief Medical Officer
$50.00K (1)
+$50.00K
37,736
$30.16K
MATSUI CONNIE
Director
$39.95K (1)
+$39.95K
50,000
$39.96K
FITZPATRICK LINDA A
CHIEF PEOPLE & COMM. OFFICER
$24.99K (1)
+$24.99K
140,510
$112.30K
+1,253%
Chow Gregory K.
CFO
$16.00K (1)
+$16.00K
4,725
$3.78K
Gerber Hans-Peter
CHIEF SCIENTIFIC OFFICER
$13.61K (1)
+$13.61K
9,518
$7.61K
Chung Jane
Chief Executive Officer
$10.01K (1)
+$10.01K
21,285
$17.01K
Pauling David
Chief Admin. Ofcr. & GC
$9.99K (1)
+$9.99K
9,748
$7.79K
Petree Daniel H
Director
$1.83K (1) scheduled
−$1.83K
22,841
$18.25K
+5,848%
Skyline Venture Partners V LP entity
10% owner
1,960,053
$1.57M
JANNEY DANIEL
Director
1,944,901
$1.55M
Alta Partners VIII, L.P. entity
10% owner
1,944,901
$1.55M
Ross Michael Jay
Director
1,824,542
$1.46M
SVLSF V, LLC entity
10% owner
1,824,542
$1.46M
CELGENE CORP /DE/ entity
10% owner
1,726,197
$1.38M
ALBINI EDWARD C
CFO AND SECRETARY
160,805
$128.52K
Borgman Anne Elizabeth
CHIEF MEDICAL OFFICER
97,452
$77.88K
Srinivasan Venkatesh
CHIEF TECH OP OFFICER
53,686
$42.91K
+297.6%
Shabbir Anik
Chief Technical Ops. Officer
40,827
$32.63K
Leyman Barbara
Chief Business Officer
16,056
$12.83K

No percentages here. This company's share count has moved by a factor of 5.1 over the window, from 16,567,238 to 85,135,290 shares. A split, a merger or a large issue changes what the company is, and a holding measured at one point in that run is not a fraction of it at another.

Insider
Date
Role
Action
Shares
Price
Amount
Vasquez Nicki
29 Jan 2024
CHIEF PORT. STRAT & ALNCE OFCR
Sold after exercise
12,185
$5.00
$60.93K
Hallam Trevor
26 Jan 2021
Chief Scientific Officer
Sold after exercise
165
$26.10
$4.31K
Hallam Trevor
26 Jan 2021
Chief Scientific Officer
Sold after exercise
2,228
$25.68
$57.22K
Hallam Trevor
28 Dec 2020
Chief Scientific Officer
Sold after exercise
2,393
$22.37
$53.53K
Hallam Trevor
27 Nov 2020
Chief Scientific Officer
Sold after exercise
2,393
$17.01
$40.71K
Hallam Trevor
5 Nov 2020
Chief Scientific Officer
Sold after exercise
16,751
$15.00
$251.27K
Petree Daniel H
1 Oct 2018
Director
Sold after exercise indirect
122
$15.00
$1.83K

What was left out

Form 4 filings counted 296
Amendments (4/A) skipped 3
Filings about a different issuer 0
Unreadable filings 0
Joint filings 4
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 7
Sales at will 19
Transactions with no price 0
Shares from compensation/vesting 18,636,698
Sales filed before the plan box existed 17
History held since 27 Sep 2018