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SUTRO BIOPHARMA, INC.

STRO Net buying
CIK 0001382101 #3439 in the set updated 21 Sep 2026
Bought (12 mo)
$89.56K
out of their own pocket, the only kind of buying there is
Sold (12 mo)
$0.00
$0.00 on a plan · $0.00 straight out of an exercise
Sold at will
$0.00
0 of 0 sales
Net
+$89.56K
+$89.56K against sales at will

By person

11 insiders · 5 transactions
Insider
Role
Bought
Sold
Net
Holding
Worth
Change
MATSUI CONNIE
Director
$39.95K (1)
+$39.95K
50,000
$39.96K
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
NEWELL WILLIAM J
CEO
292,531
$233.79K
+32.8%
ALBINI EDWARD C
CFO AND SECRETARY
160,805
$128.52K
+50.6%
FITZPATRICK LINDA A
CHIEF PEOPLE & COMM. OFFICER
119,744
$95.70K
+64.1%
Borgman Anne Elizabeth
CHIEF MEDICAL OFFICER
97,452
$77.88K
+299.8%
Srinivasan Venkatesh
CHIEF TECH OP OFFICER
53,686
$42.91K
+69.2%
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
Pauling David
15 Oct 2025
Chief Admin. Ofcr. & GC
Buy
12,504
$0.80
$9.99K
MATSUI CONNIE
15 Oct 2025
Director
Buy
50,000
$0.80
$39.95K
Chung Jane
15 Oct 2025
Chief Executive Officer
Buy
12,500
$0.80
$10.01K
Chow Gregory K.
15 Oct 2025
CFO
Buy
19,750
$0.81
$16.00K
Gerber Hans-Peter
15 Oct 2025
CHIEF SCIENTIFIC OFFICER
Buy
17,000
$0.80
$13.61K

What was left out

Form 4 filings counted 33
Amendments (4/A) skipped 0
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 0
Sales at will 0
Transactions with no price 0
Shares from compensation/vesting 33,724
History held since 27 Sep 2018