Insider · CIK 0001872398
Jane Chung
coopresidentofficerceodirector
Files at STRO (SUTRO BIOPHARMA, INC.). First filing Oct 16, 2025, latest Oct 16, 2025.
Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
1 / 0
$10k bought, $0 sold
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
STRO: SUTRO BIOPHARMA, INC.
STROOct 9, 2026 · close 14.27
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 43Moderate | SUTRO BIOPHARMA, INC. | $10k 12,500 shares | +11% | - |
Transactions
Every row this insider has filed, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Mar 4, 2026 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Common Stock | +788 | $0.00 | $0 | 21,567 | Mar 6, 2026 |
| Mar 4, 2026 | STRO SUTRO BIOPHARMA, INC. | FTax withholding Common Stock | -282 | $21.31 | $6,009 | 21,285 | Mar 6, 2026 |
| Mar 4, 2026 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Restricted Stock Units (RSUs)derivative | -788 | $0.00 | $0 | 0 | Mar 6, 2026 |
| Mar 1, 2026 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Common Stock | +688 | $0.00 | $0 | 14,579 | Mar 3, 2026 |
| Mar 1, 2026 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Common Stock | +2,500 | $0.00 | $0 | 17,079 | Mar 3, 2026 |
| Mar 1, 2026 | STRO SUTRO BIOPHARMA, INC. | FTax withholding Common Stock | -1,271 | $20.47 | $26k | 15,808 | Mar 3, 2026 |
| Mar 2, 2026 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Common Stock | +7,750 | $0.00 | $0 | 23,558 | Mar 3, 2026 |
| Mar 2, 2026 | STRO SUTRO BIOPHARMA, INC. | FTax withholding Common Stock | -2,779 | $20.55 | $57k | 20,779 | Mar 3, 2026 |
| Mar 1, 2026 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Restricted Stock Units (RSUs)derivative | -688 | $0.00 | $0 | 688 | Mar 3, 2026 |
| Mar 1, 2026 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Restricted Stock Units (RSUs)derivative | -2,500 | $0.00 | $0 | 5,000 | Mar 3, 2026 |
| Mar 2, 2026 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Restricted Stock Units (RSUs)derivative | -7,750 | $0.00 | $0 | 23,250 | Mar 3, 2026 |
| Mar 2, 2026 | STRO SUTRO BIOPHARMA, INC. | AGrant or award Restricted Stock Units (RSUs)derivative | +40,000 | $0.00 | $0 | 40,000 | Mar 3, 2026 |
| Mar 2, 2026 | STRO SUTRO BIOPHARMA, INC. | AGrant or award Stock Option (right to buy)derivative | +175,000 | $0.00 | $0 | 175,000 | Mar 3, 2026 |
| Dec 12, 2025 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Common Stock | +2,500 | $0.00 | $0 | 14,785 | Dec 16, 2025 |
| Dec 12, 2025 | STRO SUTRO BIOPHARMA, INC. | FTax withholding Common Stock | -894 | $8.02 | $7,165 | 13,891 | Dec 16, 2025 |
| Dec 12, 2025 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Restricted Stock Unit (RSU)derivative | -2,500 | $0.00 | $0 | 5,000 | Dec 16, 2025 |
| Oct 15, 2025 | STRO SUTRO BIOPHARMA, INC. | POpen-market purchase Common Stock | +12,500 | $0.80 | $10k | 122,850 | Oct 16, 2025 |
| Aug 9, 2025 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Common Stock | +18,750 | $0.00 | $0 | 117,058 | Aug 26, 2025 |
| Aug 9, 2025 | STRO SUTRO BIOPHARMA, INC. | FTax withholding Common Stock | -6,708 | $0.80 | $5,366 | 110,350 | Aug 26, 2025 |
| Aug 9, 2025 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Restricted Stock Unit (RSU)derivative | -18,750 | $0.00 | $0 | 0 | Aug 26, 2025 |
| Apr 4, 2025 | STRO SUTRO BIOPHARMA, INC. | AGrant or award Stock Option (Right to Buy)derivative | +620,000 | $0.00 | $0 | 620,000 | Apr 8, 2025 |
| Apr 4, 2025 | STRO SUTRO BIOPHARMA, INC. | AGrant or award Restricted Stock Units (RSUs)derivative | +310,000 | $0.00 | $0 | 310,000 | Apr 8, 2025 |
| Mar 4, 2025 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Common Stock | +7,875 | $0.00 | $0 | 100,642 | Mar 6, 2025 |
| Mar 4, 2025 | STRO SUTRO BIOPHARMA, INC. | FTax withholding Common Stock | -2,334 | $1.42 | $3,314 | 98,308 | Mar 6, 2025 |
| Mar 4, 2025 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Restricted Stock Unit (RSU)derivative | -7,875 | $0.00 | $0 | 7,875 | Mar 6, 2025 |
| Mar 1, 2025 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Common Stock | +6,875 | $0.00 | $0 | 77,217 | Mar 4, 2025 |
| Mar 1, 2025 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Common Stock | +25,000 | $0.00 | $0 | 102,217 | Mar 4, 2025 |
| Mar 1, 2025 | STRO SUTRO BIOPHARMA, INC. | FTax withholding Common Stock | -9,450 | $1.59 | $15k | 92,767 | Mar 4, 2025 |
| Mar 1, 2025 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Restricted Stock Unit (RSU)derivative | -6,875 | $0.00 | $0 | 13,750 | Mar 4, 2025 |
| Mar 1, 2025 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Restricted Stock Unit (RSU)derivative | -25,000 | $0.00 | $0 | 75,000 | Mar 4, 2025 |
| Dec 1, 2024 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Common Stock | +25,000 | $0.00 | $0 | 79,262 | Dec 3, 2024 |
| Dec 1, 2024 | STRO SUTRO BIOPHARMA, INC. | FTax withholding Common Stock | -8,920 | $2.69 | $24k | 70,342 | Dec 3, 2024 |
| Dec 1, 2024 | STRO SUTRO BIOPHARMA, INC. | MOption exercise Restricted Stock Unit (RSU)derivative | -25,000 | $0.00 | $0 | 75,000 | Dec 3, 2024 |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.