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JF

Jeffrey S. Flier

SRRK
DIRECTOR · SCHOLAR ROCK HOLDING CORP · CIK 0001740266
FILING MIX · LIFETIME44%/56%
BUYS
11
SELLS
14
TOTAL VALUE
$2.65M
COMPANIES
1
ACTIVE SINCE
Jun 2020
HOLDINGS NOW
27,871
AVG SELL PX
$34.38
TRADE KIND
SHOWING 25 / 25
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
10 backtested trades · 8 horizons · 7 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Jeffrey S. Flier, 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
7d10+30.00%+4.07%+1.27%+2.80%+3.48%—
14d10+30.00%+3.44%+1.85%+1.59%+3.19%—
30d10+30.00%+8.26%+4.23%+4.03%+13.65%—
60d10+30.00%+2.48%+5.92%-3.45%-0.88%—
90d10+80.00%-7.47%+8.11%-15.58%-17.20%—
180d10+40.00%-3.29%+8.98%-12.26%+6.50%—
1y10(1 pending)+44.44%-4.50%+3.60%-29.30%-61.85%—
2y10(6 pending)+100.00%-79.30%+4.66%-83.96%-84.63%—
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 · 27,871 shares · as of Jul 1, 2026
011,09722,19333,29044,386202120222023202420252026SHARES 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
2026
2026
FLOW · 11 buys / 14 sellsCOVERAGE · 26 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
SRRK
SCHOLAR ROCK HOLDING CORP
SALE10b5-1
10b5-1 plan
1,568$53.53$83.9K29,341Jul 1, 2026Jul 6, 2026 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
SALE10b5-1
10b5-1 plan
1,470$54.24$79.7K27,871Jul 1, 2026Jul 6, 2026 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
SALE10b5-1
10b5-1 plan
15$54.88$82327,856Jul 1, 2026Jul 6, 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——30,909Jun 4, 2026Jun 8, 2026 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
SALE10b5-1
10b5-1 plan
11,136$40.02$445.7K0Jul 16, 2025Jul 18, 2025 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
PURCHASE
20,316$21.62$439.2K44,386Jun 23, 2025Jun 25, 2025 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
SALE
20,316——0Jun 23, 2025Jun 25, 2025 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
SALE10b5-1
10b5-1 plan
17,550$32.16$564.4K26,836Jun 23, 2025Jun 25, 2025 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
SALE10b5-1
10b5-1 plan
11,136$33.21$369.8K11,136Jun 23, 2025Jun 25, 2025 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
SALE10b5-1
10b5-1 plan
2,766$32.74$90.5K24,070Jun 23, 2025Jun 25, 2025 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
SALE10b5-1
10b5-1 plan
4,975$29.84$148.4K24,070May 29, 2025May 30, 2025 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
SALE10b5-1
10b5-1 plan
1,100$29.23$32.2K29,045May 29, 2025May 30, 2025 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
PURCHASEGRANT
Stock grant
7,632——30,145May 22, 2025May 23, 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
13,500——22,513Jun 27, 2024Jul 1, 2024 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
PURCHASEGRANT
Stock grant
18,000——18,000Jun 27, 2024Jul 1, 2024 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
PURCHASEGRANT
Stock grant
36,000——36,000Jun 21, 2023Jun 22, 2023 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
PURCHASEGRANT
Stock grant
28,000——28,000May 26, 2022May 27, 2022 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
SALE
6,000$30.89$185.3K22,272Oct 1, 2021Oct 5, 2021 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
SALE
500$34.09$17.0K9,013Sep 20, 2021Sep 21, 2021 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
SALE
2,963$31.84$94.3K31,309Jul 26, 2021Jul 28, 2021 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
SALE
3,037$31.48$95.6K28,272Jul 26, 2021Jul 28, 2021 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
PURCHASEGRANT
Stock grant
7,800——7,800May 27, 2021Jun 1, 2021 ↗View →
SRRK
SCHOLAR ROCK HOLDING CORP
PURCHASEGRANT
Stock grant
13,000——13,000Jun 16, 2020Jun 18, 2020 ↗View →
Other insiders · SRRK
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About this filer
CIK 0001740266
ROLE
Director
PRIMARY
SRRK
COMPANIES
1
ACTIVE SINCE
Jun 2020
MARKETPEEL · /INSIDER/0001740266DATA · 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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