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The company

Solid Biosciences Inc.

SLDB · Nasdaq

Health CareBiotechnologyNot moving yet

SLDB stood above a rising 150-day average in 41 of the last 52 weekly readings, and has been out of that trend for the last 4 weeks. It is 20.7% below that average now. Biotechnology: 18% of its 561 stocks in an uptrend (−14 points in four weeks); Health Care: 28% (−9 points in four weeks).

SEC filings

Statistics

Rotation: Not moving yet
Weeks in an uptrend: out for 4
Industry in uptrend: 18% -14 in 4 wk
Insider buys, 12 months: $0
Insider sales, 12 months: $5.2M
Officials’ trades on record: 0
Institutions holding: 153 (+15)

In the rotation

Each square a week: lit when it closed above a rising 150-day average. 41 of 52 weeks.

21 Apr – 20 Oct

Biotechnology: Few of its stocks are in an uptrend and the share has fallen sharply over four weeks. Health Care: A minority of its stocks are in an uptrend and the share has fallen sharply over four weeks.

Money in and out

1 Nov 2024 – 1 Oct 2026

Open-market buys above the line and sales below, in dollars.

Congress and officials

No member of Congress or official has disclosed a trade in it.

Insiders

Buy orders, 12 months0

Sale orders, 12 months29

Buyers · sellers0 · 7

Who	Did	Shares	Traded
Gabriel BrooksChief Medical Officer	sold	4,374at $5.62	19 Oct 2026filed 20 Oct 2026
Kevin TanCFO & Treasurer	sold	5,404at $5.82	18 Feb 2026filed 18 Feb 2026
Gabriel BrooksChief Medical Officer	sold	0at $5.82	18 Feb 2026filed 18 Feb 2026
David T. HowtonChief Operating Officer	sold	7,469at $5.82	18 Feb 2026filed 18 Feb 2026
Paul HerzichChief Technology Officer	sold	3,616at $5.82	18 Feb 2026filed 18 Feb 2026
Ilan GanotDirector	sold	2,658at $5.82	18 Feb 2026filed 18 Feb 2026
Jessie HanrahanChief Regulatory Officer	sold	4,134at $5.82	18 Feb 2026filed 18 Feb 2026
Alexander CumboPresident and CEO	sold	16,644at $5.82	18 Feb 2026filed 18 Feb 2026
Paul HerzichChief Technology Officer	sold	10,905at $6.44	4 Feb 2026filed 6 Feb 2026
Jessie HanrahanChief Regulatory Officer	sold	12,348at $6.44	4 Feb 2026filed 6 Feb 2026
Gabriel BrooksChief Medical Officer	sold	12,616at $6.44	4 Feb 2026filed 6 Feb 2026
Kevin TanCFO & Treasurer	sold	14,783at $6.44	4 Feb 2026filed 6 Feb 2026

Lines filed since 2 January 2026, newest first; every insider’s older lines are on their own page.

Institutions

Holders153+15 on the quarter

New · exited41 · 26

Reported value$1.1B

Quarter to 30 Jun 2026, against 31 Mar 2026; newest filing 31 Aug 2026.

Manager	Shares	Change
RA CAPITAL MANAGEMENT, L.P.added · filed 14 Aug 2026	12,036,126$120.2M	+2,696,148+28.9%
PERCEPTIVE ADVISORS LLCunchanged · filed 14 Aug 2026	11,906,646$118.9M	00.0%
Bain Capital Life Sciences Investors, LLCunchanged · filed 14 Aug 2026	9,808,819$98.0M	00.0%
Siren, L.L.C.unchanged · filed 13 Aug 2026	7,690,405$76.8M	00.0%
BlackRock, Inc.added · filed 7 Aug 2026	6,934,248$69.3M	+1,975,894+39.8%
FMR LLCadded · filed 13 Aug 2026	6,875,957$68.7M	+3,269,553+90.7%
ARMISTICE CAPITAL, LLCadded · filed 14 Aug 2026	4,278,000$42.7M	+1,078,000+33.7%
STATE STREET CORPadded · filed 7 Aug 2026	4,175,365$41.7M	+3,049,878+271.0%
Jupiter Topco LLCnew · filed 14 Aug 2026	4,043,605$40.4M	+4,043,605
VANGUARD CAPITAL MANAGEMENT LLCnew · filed 13 Aug 2026	4,009,922$40.1M	+4,009,922