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Insider Trading Intelligence
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KP

Katie Peng

SRRK
DIRECTOR · SCHOLAR ROCK HOLDING CORP · CIK 0001983850
FILING MIX · LIFETIME56%/44%
BUYS
15
SELLS
12
TOTAL VALUE
$502.0K
COMPANIES
2
ACTIVE SINCE
Aug 2023
HOLDINGS NOW
38,501
AVG SELL PX
$43.67
TRADE KIND
SHOWING 27 / 27
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
7 backtested trades · 8 horizons · 11 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Katie Peng, 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
7d7+14.29%+2.91%+0.62%+2.29%+3.87%—
14d7+42.86%+5.75%+1.18%+4.57%+7.72%—
30d7+42.86%+4.84%+0.61%+4.24%+3.02%—
60d7+42.86%+3.19%+3.30%-0.10%+3.32%—
90d7+42.86%+9.08%+4.18%+4.90%-4.87%—
180d7+42.86%+18.82%+9.11%+9.71%+23.12%—
1y7(4 pending)+0.00%+30.96%+23.04%+7.92%+12.57%—
2y7(7 pending)——————
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
SRRK · 34,301 shares · as of Jul 1, 2026
09,93719,87429,81039,74720252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
2026
FLOW · 15 buys / 12 sellsCOVERAGE · 13 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
SRRK
SCHOLAR ROCK HOLDING CORP
SALE10b5-1
10b5-1 plan
21$54.96$1.2K34,301Jul 1, 2026Jul 6, 2026 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
SALE10b5-1
10b5-1 plan
2,988$53.56$160.0K36,759Jul 1, 2026Jul 6, 2026 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
SALE10b5-1
10b5-1 plan
2,437$54.25$132.2K34,322Jul 1, 2026Jul 6, 2026 ↗View →
ACET
ADICET BIO, INC.
PURCHASEGRANT
Stock grant
4,200——4,200Jun 21, 2026Jun 23, 2026 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
PURCHASEGRANT
Stock grant
4,310——4,310Jun 4, 2026Jun 8, 2026 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
PURCHASEGRANT
Stock grant
6,839——39,747Jun 4, 2026Jun 8, 2026 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
SALE10b5-1
10b5-1 plan
726$43.88$31.9K33,188Dec 16, 2025Dec 18, 2025 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
SALE10b5-1
10b5-1 plan
280$44.63$12.5K32,908Dec 16, 2025Dec 18, 2025 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
SALE10b5-1
10b5-1 plan
76$33.20$2.5K33,914Sep 16, 2025Sep 17, 2025 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
SALE10b5-1
10b5-1 plan
930$32.48$30.2K33,990Sep 16, 2025Sep 17, 2025 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
SALE10b5-1
10b5-1 plan
54$32.53$1.8K34,920Jun 16, 2025Jun 17, 2025 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
SALE10b5-1
10b5-1 plan
2,977$31.96$95.1K34,974Jun 16, 2025Jun 17, 2025 ↗View →
ACET
ADICET BIO, INC.
PURCHASEGRANT
Stock grant
26,400——26,400Jun 11, 2025Jun 13, 2025 ↗View →
ACET
ADICET BIO, INC.
PURCHASEGRANT
Stock grant
5,900——11,800Jun 11, 2025Jun 13, 2025 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
PURCHASEGRANT
Stock grant
9,206——9,206May 22, 2025May 23, 2025 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
PURCHASEGRANT
Stock grant
7,632——37,951May 22, 2025May 23, 2025 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
SALE10b5-1
10b5-1 plan
1,006$34.42$34.6K30,319Mar 17, 2025Mar 19, 2025 ↗View →
ACET
ADICET BIO, INC.
SALE
70,200——0Aug 21, 2024Aug 23, 2024 ↗View →
ACET
ADICET BIO, INC.
PURCHASEGRANT
Stock grant
70,200——70,200Aug 21, 2024Aug 23, 2024 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
PURCHASEGRANT
Stock grant
4,500——31,325Jun 27, 2024Jul 1, 2024 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
PURCHASEGRANT
Stock grant
6,000——6,000Jun 27, 2024Jul 1, 2024 ↗View →
ACET
ADICET BIO, INC.
PURCHASEGRANT
Stock grant
5,900——5,900Jun 5, 2024Jun 7, 2024 ↗View →
ACET
ADICET BIO, INC.
PURCHASEGRANT
Stock grant
26,400——26,400Jun 5, 2024Jun 7, 2024 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
PURCHASEGRANT
Stock grant
26,825——26,825Apr 9, 2024Apr 11, 2024 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
PURCHASEGRANT
Stock grant
35,767——35,767Apr 9, 2024Apr 11, 2024 ↗View →
ACET
ADICET BIO, INC.
SALE
70,200——0Aug 14, 2023Aug 16, 2023 ↗View →
ACET
ADICET BIO, INC.
PURCHASEGRANT
Stock grant
70,200——70,200Aug 14, 2023Aug 16, 2023 ↗View →
Other insiders · SRRK
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About this filer
CIK 0001983850
ROLE
Director
PRIMARY
SRRK
COMPANIES
2
ACTIVE SINCE
Aug 2023
MARKETPEEL · /INSIDER/0001983850DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

The morning brief, before the bell.

One short email. Insider buys, congressional trades, and plain-English analysis.

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