NASDAQ: STRO
Sutro Biopharma Inc Stock Ownership - Who owns Sutro Biopharma?

Insider buying vs selling

Have Sutro Biopharma Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Hanspeter GerberCSci2026-09-181,345$15.34
$20.63kSell
Jane ChungChief Executive Officer2026-03-04282$21.31
$6.01kSell
David PaulingChief Admin. Ofcr. GC2026-03-04277$21.31
$5.90kSell
Hanspeter GerberCHIEF SCIENTIFIC OFFICER2026-03-021,170$20.55
$24.04kSell
Jane ChungChief Executive Officer2026-03-022,779$20.55
$57.11kSell
David PaulingChief Admin. Ofcr. GC2026-03-02970$20.55
$19.93kSell
Hanspeter GerberCHIEF SCIENTIFIC OFFICER2026-03-01463$20.47
$9.48kSell
David PaulingChief Admin. Ofcr. GC2026-03-01551$20.47
$11.28kSell
Jane ChungChief Executive Officer2026-03-011,271$20.47
$26.02kSell
Jane ChungChief Executive Officer2025-12-12894$8.02
$7.17kSell

1 of 1

STRO insiders have sold more... subscribe to Premium to read more.
Net Insider Buy/Sell (L12M) Ownership

Be the first to know when STRO insiders and whales buy or sell their stock.

STRO Shareholders

What type of owners hold Sutro Biopharma Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Merck Co Inc16.43%2,723,509$24.78MInsider
Skyline Venture Partners V LP11.82%1,960,053$17.84MInsider
Alta Partners VIII LP11.73%1,944,901$17.70MInsider
Daniel Janney11.73%1,944,901$17.70MInsider
Michael Jay Ross11.00%1,824,542$16.60MInsider
Svlsf V LLC11.00%1,824,542$16.60MInsider
Celgene Corp10.41%1,726,197$15.71MInsider
William J. Newell2.82%466,878$4.25MInsider
Edward C. Albini0.97%160,805$1.46MInsider
Linda A. Fitzpatrick0.91%150,893$1.37MInsider

1 of 3

STRO vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
STRO0.10%92.08%Net SellingNet Selling
MGNX0.08%37.82%Net SellingNet Buying
ADAG0.02%0.89%Net BuyingNet Buying
RNA0.08%3.04%Net SellingNet Selling
VRXA0.00%13.51%Net BuyingNet Buying

Sutro Biopharma Stock Ownership FAQ

Who owns Sutro Biopharma?

Sutro Biopharma (NASDAQ: STRO) is owned by 0.10% institutional shareholders, 92.08% Sutro Biopharma insiders, and 7.83% retail investors. Merck Co Inc is the largest individual Sutro Biopharma shareholder, owning 2.72M shares representing 16.43% of the company. Merck Co Inc's Sutro Biopharma shares are currently valued at $24.81M.

If you're new to stock investing, here's how to buy Sutro Biopharma stock.
WallStreetZen does not provide financial advice and does not issue recommendations or offers to buy stock or sell any security.

Information is provided 'as-is' and solely for informational purposes and is not advice. WallStreetZen does not bear any responsibility for any losses or damage that may occur as a result of reliance on this data.