SEC Insider Transactions from Pauling David.

Last updated: 2026-03-14 11:56 UTC | Total transactions: 17

Pauling David, Chief Administrative Officer and General Counsel of Sutro Biopharma Inc. ($STRO), made one open market purchase of shares in the last year, totaling nearly $10,000. His most recent buy occurred on October 15, 2025. This activity ranks him 4,318th among nearly 5,000 insiders by purchase value, well below the average of $1.46 million across about 3.3 transactions per insider. He reported no open market sales in the period.

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Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
March 4, 2026 SUTRO BIOPHARMA, INC. $STRO Pauling David Chief Admin. Ofcr. & GC F Common Stock 277 $21.31 9,748.0000 85,135,290 2.76% 0.00%
March 4, 2026 SUTRO BIOPHARMA, INC. $STRO Pauling David Chief Admin. Ofcr. & GC M Common Stock 675 $0.00 10,025.0000 85,135,290 7.22% 0.00%
March 4, 2026 SUTRO BIOPHARMA, INC. $STRO Pauling David Chief Admin. Ofcr. & GC M Restricted Stock Units (RSUs) 675 $0.00 0.0000 85,135,290 100.00% 0.00%
March 1, 2026 SUTRO BIOPHARMA, INC. $STRO Pauling David Chief Admin. Ofcr. & GC F Common Stock 551 $20.47 7,964.0000 85,135,290 6.47% 0.00%
March 2, 2026 SUTRO BIOPHARMA, INC. $STRO Pauling David Chief Admin. Ofcr. & GC M Common Stock 2356 $0.00 10,320.0000 85,135,290 29.58% 0.00%
March 2, 2026 SUTRO BIOPHARMA, INC. $STRO Pauling David Chief Admin. Ofcr. & GC F Common Stock 970 $20.55 9,350.0000 85,135,290 9.40% 0.00%
March 1, 2026 SUTRO BIOPHARMA, INC. $STRO Pauling David Chief Admin. Ofcr. & GC M Common Stock 500 $0.00 7,673.0000 85,135,290 6.97% 0.00%
March 1, 2026 SUTRO BIOPHARMA, INC. $STRO Pauling David Chief Admin. Ofcr. & GC M Common Stock 842 $0.00 8,515.0000 85,135,290 10.97% 0.00%
March 1, 2026 SUTRO BIOPHARMA, INC. $STRO Pauling David Chief Admin. Ofcr. & GC M Restricted Stock Units (RSUs) 842 $0.00 1,686.0000 85,135,290 33.31% 0.00%
March 2, 2026 SUTRO BIOPHARMA, INC. $STRO Pauling David Chief Admin. Ofcr. & GC M Restricted Stock Units (RSUs) 2356 $0.00 7,069.0000 85,135,290 25.00% 0.00%
March 2, 2026 SUTRO BIOPHARMA, INC. $STRO Pauling David Chief Admin. Ofcr. & GC A Restricted Stock Units (RSUs) 4200 $0.00 4,200.0000 85,135,290 9999.99% 0.00%
March 2, 2026 SUTRO BIOPHARMA, INC. $STRO Pauling David Chief Admin. Ofcr. & GC A Stock Option (right to buy) 33600 $0.00 33,600.0000 85,135,290 9999.99% 0.04%
March 1, 2026 SUTRO BIOPHARMA, INC. $STRO Pauling David Chief Admin. Ofcr. & GC M Restricted Stock Units (RSUs) 500 $0.00 500.0000 85,135,290 50.00% 0.00%
Dec. 23, 2025 SUTRO BIOPHARMA, INC. $STRO Pauling David Chief Admin. Ofcr. & GC A Stock Option (right to buy) 7200 $0.00 7,200.0000 85,135,290 9999.99% 0.01%
Oct. 15, 2025 SUTRO BIOPHARMA, INC. $STRO Pauling David Chief Admin. Ofcr. & GC P Common Stock 12504 $0.80 71,737.0000 83,775,336 21.11% 0.01%
April 4, 2025 SUTRO BIOPHARMA, INC. $STRO Pauling David Chief Admin. Ofcr. & GC A Stock Option (Right to Buy) 101500 $0.00 101,500.0000 83,775,336 9999.99% 0.12%
April 4, 2025 SUTRO BIOPHARMA, INC. $STRO Pauling David Chief Admin. Ofcr. & GC A Restricted Stock Units (RSUs) 94250 $0.00 94,250.0000 83,775,336 9999.99% 0.11%