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$SRPT
$18.89 +$0.91 (5.06%) Close

Ownership

13F as of Q2 2026 · 105.6M shares outstanding

Who owns SRPT?

By type of holder
Institutions 100.0% Insiders 0.0% Everyone else 0.0%
Concentration Top 10 holders own 59.4%
BlackRock, Inc. 18.0% · State Street Corp 8.4%
Institutional ownership
100.0%
+2.5 pts vs last qtr
Institutional holders
323
-22 vs last qtr
Net shares bought
+4.3M
by institutions in Q2 2026
New / sold out
49 / 71
positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026
  • BlackRock, Inc. +4.2M
  • State Street Corp +2.3M

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Biggest sellers in Q2 2026
  • Ra Capital Management, L.P. SOLD OUT −3.9M
  • Aqr Capital Management LLC −2.1M

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Who is planning to sell?

Notices of proposed sale, last 12 months
$417K
2 notices from 2 people
Shares covered
20.4K
0.02% of the company
Arranged in advance
0%
of the value is under a 10b5-1 plan
Under a 10b5-1 plan No plan
$0$147.1K$294.1KNovDec 2025: $294.1K without a planDecJanFebMar 2026: $123.2K without a planMarAprMayJunJulAugSepOct
Largest proposed sellers
  • Ian M Estepan Officer $294K
  • Stephen Mayo Director $123K
Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2017–FY2025
+70.2%
+6.88% a year
Each share's claim on the business
−41.3%
shrank without buying or selling a share
Spent on buybacks vs paid in stock
$25M vs $1.1B
over 9 fiscal years
Diluted shares, split-adjusted
57.1M83.0M109.0M2017: 58.8M shares'172018: 66.3M shares'182019: 73.6M shares'192020: 78.0M shares'202021: 81.3M shares'212022: 87.6M shares'222023: 92.4M shares'232024: 107.9M shares'242025: 100.1M shares'25
Buybacks Stock-based comp
$0$116.5M$233.0M2017 buybacks: $02017 stock comp: $30.5M'172018 buybacks: $02018 stock comp: $50.1M'182019 buybacks: $02019 stock comp: $78.6M'192020 buybacks: $02020 stock comp: $108.1M'202021 buybacks: $02021 stock comp: $113.9M'212022 buybacks: $02022 stock comp: $233.0M'222023 buybacks: $02023 stock comp: $182.5M'232024 buybacks: $02024 stock comp: $184.3M'242025 buybacks: $25.0M2025 stock comp: $123.4M'25

How patient are the owners?

Institutional shares by how long they've been held
5+ years69% 3–5 years2% 1–3 years19% Under 1 year10%
Quarterly turnover
18.9%
of institutional shares changed hands
Top 10 managers, median time held
5 years

Super Investors

Investment managers reporting SRPT on Form 13F
B
BlackRock, Inc.
Shares
19.0M
% of company
17.98%
Change vs last qtr
+4.2M (+28.7%)
Held since
≤2021
SS
State Street Corp
Shares
8.9M
% of company
8.44%
Change vs last qtr
+2.3M (+34.8%)
Held since
≤2021

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Institutional Funds

Mutual funds and ETFs reporting SRPT on Form N-PORT; together they hold 49.6% of the company
Position value
$114M
% of company
6.02%
% of the fund
0.10%
As of
June 30, 2026
Position value
$80.2M
% of company
4.22%
% of the fund
0.75%
As of
June 30, 2026

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Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G
BR
Barry Richard
Insider
Shares
3.2M
% of company
3.06%
Change vs last qtr
—
Held since
—
ID
Ingram Douglas S
Insider
Shares
929.4K
% of company
0.88%
Change vs last qtr
—
Held since
—

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