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Teresa L. Young

MCRB
SEE REMARKS · SERES THERAPEUTICS, INC. · CIK 0001814656
FILING MIX · LIFETIME49%/51%
BUYS
29
SELLS
30
TOTAL VALUE
$60.6K
COMPANIES
1
ACTIVE SINCE
Jun 2020
HOLDINGS NOW
8,632
AVG SELL PX
$1.50
TRADE KIND
SHOWING 59 / 59
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
12 backtested trades · 8 horizons · 13 pending
Forward-return performance of every backtestable P/S trade by Teresa L. Young, 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
7d12+50.00%+1.81%+0.28%+1.53%-1.44%—
14d12+58.33%+0.87%+1.58%-0.70%-3.68%—
30d12+58.33%-1.91%+1.81%-3.72%-3.67%—
60d12+50.00%+4.04%+3.58%+0.45%-2.45%—
90d12+66.67%-0.69%+6.07%-6.76%-18.82%—
180d12(1 pending)+81.82%-15.76%+9.74%-25.50%-37.24%—
1y12(3 pending)+66.67%-10.14%+20.84%-30.98%-44.32%—
2y12(9 pending)+100.00%-53.17%+49.75%-102.92%-99.98%—
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
MCRB · 8,632 shares · as of Feb 15, 2026
0162,500325,000487,500650,000202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
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 · 29 buys / 30 sellsCOVERAGE · 24 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
MCRB
SERES THERAPEUTICS, INC.
SALE
See Remarks
98——780Feb 15, 2026Feb 18, 2026 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE
See Remarks
133——531Feb 15, 2026Feb 18, 2026 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
75$8.47$6358,557Feb 15, 2026Feb 18, 2026 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASE
See Remarks
231——8,632Feb 15, 2026Feb 18, 2026 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE
See Remarks
132——664Nov 15, 2025Nov 18, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
1,042$17.30$18.0K8,401Nov 15, 2025Nov 18, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASE
See Remarks
132——9,345Nov 15, 2025Nov 18, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASE
See Remarks
3,998——9,213Nov 15, 2025Nov 18, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE
See Remarks
98——878Nov 15, 2025Nov 18, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASE
See Remarks
98——9,443Nov 15, 2025Nov 18, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE
See Remarks
3,998——0Nov 15, 2025Nov 18, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
3,998——3,998Sep 26, 2025Sep 30, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
59$16.65$9825,215Aug 18, 2025Aug 19, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASE
See Remarks
133——5,177Aug 15, 2025Aug 19, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE
See Remarks
133——796Aug 15, 2025Aug 19, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASE
See Remarks
97——5,274Aug 15, 2025Aug 19, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE
See Remarks
97——976Aug 15, 2025Aug 19, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
63$7.28$4595,044May 16, 2025May 19, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE
See Remarks
133——929May 15, 2025May 19, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE
See Remarks
98——1,073May 15, 2025May 19, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASE
See Remarks
98——5,107May 15, 2025May 19, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASE
See Remarks
133——5,009May 15, 2025May 19, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
3,338$0.81$2.7K97,536Feb 18, 2025Feb 19, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASE
See Remarks
7,813——100,874Feb 15, 2025Feb 19, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASE
See Remarks
2,657——93,061Feb 15, 2025Feb 19, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE
See Remarks
7,813——23,437Feb 15, 2025Feb 19, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE
See Remarks
2,657——21,250Feb 15, 2025Feb 19, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
650,000——650,000Feb 7, 2025Feb 11, 2025 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
735$0.54$39890,404Nov 18, 2024Nov 19, 2024 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASE
See Remarks
2,656——91,139Nov 15, 2024Nov 19, 2024 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE
See Remarks
2,656——23,907Nov 15, 2024Nov 19, 2024 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
2,983$0.69$2.1K88,483Oct 28, 2024Oct 29, 2024 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASE
See Remarks
11,360——91,466Oct 27, 2024Oct 29, 2024 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE
See Remarks
11,360——0Oct 27, 2024Oct 29, 2024 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
728$0.84$61280,106Aug 16, 2024Aug 19, 2024 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASE
See Remarks
2,656——80,834Aug 15, 2024Aug 19, 2024 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE
See Remarks
2,656——26,563Aug 15, 2024Aug 19, 2024 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
24,480$1.08$26.5K78,178Aug 5, 2024Aug 6, 2024 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASE
See Remarks
85,000——102,658Aug 3, 2024Aug 6, 2024 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE
See Remarks
85,000——0Aug 3, 2024Aug 6, 2024 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE
See Remarks
2,656——29,219May 15, 2024May 17, 2024 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASE
See Remarks
2,656——18,361May 15, 2024May 17, 2024 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
703$0.94$66117,658May 15, 2024May 17, 2024 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
3,374$1.08$3.6K15,705Feb 16, 2024Feb 16, 2024 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASE
See Remarks
10,625——19,079Feb 15, 2024Feb 16, 2024 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE
See Remarks
10,625——31,875Feb 15, 2024Feb 16, 2024 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
187,500——187,500Feb 14, 2024Feb 16, 2024 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
31,250——31,250Feb 14, 2024Feb 16, 2024 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
287,905——287,905Feb 14, 2024Feb 16, 2024 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
2,907$1.35$3.9K8,454Oct 30, 2023Oct 31, 2023 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASE
See Remarks
11,361——11,361Oct 27, 2023Oct 31, 2023 ↗View →
MCRB
SERES THERAPEUTICS, INC.
SALE
See Remarks
11,361——11,360Oct 27, 2023Oct 31, 2023 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
22,721——22,721Apr 27, 2023Oct 31, 2023 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
85,000——85,000Feb 3, 2023Feb 7, 2023 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
85,000——85,000Feb 3, 2023Feb 7, 2023 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
42,500——42,500Feb 3, 2023Feb 7, 2023 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
120,000——120,000Feb 4, 2022Feb 8, 2022 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
90,000——90,000Feb 4, 2021Feb 8, 2021 ↗View →
MCRB
SERES THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
300,000——300,000Jun 29, 2020Jul 1, 2020 ↗View →
Other insiders · MCRB
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About this filer
CIK 0001814656
ROLE
See Remarks
PRIMARY
MCRB
COMPANIES
1
ACTIVE SINCE
Jun 2020
MARKETPEEL · /INSIDER/0001814656DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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