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Insider Trading Intelligence
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JO

Jason A. Okazaki

ASMB
CHIEF OPERATING OFFICER · ASSEMBLY BIOSCIENCES, INC. · CIK 0001807214
FILING MIX · LIFETIME56%/44%
BUYS
18
SELLS
14
TOTAL VALUE
$101.1K
COMPANIES
1
ACTIVE SINCE
Mar 2020
HOLDINGS NOW
163,354
AVG SELL PX
$2.53
TRADE KIND
SHOWING 32 / 32
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
14 backtested trades · 8 horizons · 3 pending
Forward-return performance of every backtestable P/S trade by Jason A. Okazaki, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d14+50.00%-1.52%-0.09%-1.43%-0.86%—
14d14+21.43%+8.56%+0.50%+8.05%+5.36%—
30d14+28.57%+5.42%+0.07%+5.35%+4.61%—
60d14+35.71%+5.47%+2.92%+2.56%-0.65%—
90d14+21.43%+11.37%+3.22%+8.15%+5.71%—
180d14+50.00%+10.79%+7.34%+3.45%-1.85%—
1y14+42.86%+16.09%+16.10%-0.02%-17.22%—
2y14(3 pending)+27.27%+49.48%+37.32%+12.16%-3.24%—
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
ASMB · 163,354 shares · as of Mar 29, 2026
0117,500235,000352,500470,000202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2020
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
FLOW · 18 buys / 14 sellsCOVERAGE · 25 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
ASMB
ASSEMBLY BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
50,750——163,354Mar 29, 2026Jun 5, 2026 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
94,250——111,916Mar 29, 2026Mar 31, 2026 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
SALE
CEO and President
355$9.85$3.5K14,757Mar 31, 2025Apr 1, 2025 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
71,100——71,100Mar 29, 2025Apr 1, 2025 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
SALE
CEO and President
197$14.81$2.9K14,904Oct 3, 2024Oct 4, 2024 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
SALE
CEO and President
981$14.23$14.0K15,101Aug 2, 2024Aug 5, 2024 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
SALE
CEO and President
549$14.93$8.2K16,082May 23, 2024May 24, 2024 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
SALE
CEO and President
1,569$12.71$19.9K16,423Apr 30, 2024May 1, 2024 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
4,166——17,992Apr 29, 2024May 1, 2024 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
SALE
CEO and President
354$13.07$4.6K13,826Apr 1, 2024Apr 2, 2024 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
65,000——65,000Mar 29, 2024Apr 2, 2024 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
SALE
CEO and President
392$12.87$5.0K14,180Mar 27, 2024Mar 29, 2024 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
SALE
CEO and President
2,363$0.80$1.9K174,923Oct 3, 2023Oct 4, 2023 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
12,500——177,286Oct 2, 2023Oct 4, 2023 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
SALE
CEO and President
11,827$1.09$12.9K164,786Aug 2, 2023Aug 3, 2023 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
50,000——176,613Jun 22, 2023Jun 23, 2023 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
SALE
CEO and President
6,561$1.04$6.8K126,613May 23, 2023May 24, 2023 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
35,000——133,174May 22, 2023May 24, 2023 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
SALE
CEO and President
4,247$0.82$3.5K98,174Mar 30, 2023Mar 31, 2023 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
470,000——470,000Mar 29, 2023Mar 31, 2023 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
SALE
CEO and President
4,693$1.02$4.8K102,421Mar 27, 2023Mar 28, 2023 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
12,500——107,114Feb 16, 2023Feb 17, 2023 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
250,000——250,000Aug 1, 2022Aug 3, 2022 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
SALE
Chief Operating Officer
1,269$2.17$2.8K94,614Mar 30, 2022Mar 31, 2022 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
31,250——31,250Mar 29, 2022Mar 31, 2022 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
31,250——95,883Mar 29, 2022Mar 31, 2022 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
125,000——125,000Mar 29, 2022Mar 31, 2022 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
SALE
Chief Operating Officer
4,617$2.24$10.4K64,633Mar 28, 2022Mar 29, 2022 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
82,500——82,500Mar 29, 2021Apr 2, 2021 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
13,750——67,250Mar 29, 2021Apr 2, 2021 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
50,000——52,500Mar 26, 2020Mar 30, 2020 ↗View →
ASMB
ASSEMBLY BIOSCIENCES, INC.
PURCHASEGRANT
Stock grant
250,000——250,000Mar 26, 2020Mar 30, 2020 ↗View →
Other insiders · ASMB
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About this filer
CIK 0001807214
ROLE
Chief Operating Officer
PRIMARY
ASMB
COMPANIES
1
ACTIVE SINCE
Mar 2020
MARKETPEEL · /INSIDER/0001807214DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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