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ISSUER PROFILE · CIK 0001649904

RHYTHM PHARMACEUTICALS, INC.RYTM

5 13D/G filings 3 distinct filers 80 insider transactions (365d)

Cross-Reference Snapshot

Activist filings
5
1 SCHEDULE 13G · 4 SC
Distinct filers
3
multi-activist cluster
Insiders (365d)
80
17 buys · 36 sales
Latest short DTC
14.14
as of 2026-09-30

Institutional Consensus · 2026-06-30

Held by elite portfolio managers
2 holders · $45.99M
Duquesne Family OfficePoint72 Asset Mgmt

13D/G Filings Timeline · 5 total

FiledFormFilerStakeSharesIntent
2026-10-13 SCHEDULE 13G JPMORGAN CHASE & CO — — view →
2020-06-26 SC MPM BIOVENTURES V, L.P. — — view →
2020-02-05 SC MPM BIOVENTURES V, L.P. — — view →
2019-02-12 SC MPM BIOVENTURES V, L.P. — — view →
2018-02-07 SC ORBIMED ADVISORS LLC — — view →

Form 4 Insider Transactions · last 365d

DateInsiderRoleTypeSharesPriceValue
2026-09-14 Meeker David P director, officer Option exercise 50,000 $6.05 $303K
2026-09-14 Meeker David P director, officer Sale 6,439 $101.75 $655K
2026-09-14 Meeker David P director, officer Sale 30,746 $102.35 $3.15M
2026-09-14 Meeker David P director, officer Sale 8,698 $103.43 $900K
2026-09-14 Meeker David P director, officer Sale 1,817 $104.55 $190K
2026-09-14 Meeker David P director, officer Sale 2,300 $105.19 $242K
2026-08-13 Lee Jennifer Kayden officer Option exercise 35,000 $24.29 $850K
2026-08-13 Lee Jennifer Kayden officer Option exercise 21,601 $6.80 $147K
2026-08-13 Lee Jennifer Kayden officer Sale 75,834 $117.38 $8.90M
2026-08-12 Mazabraud Yann officer Option exercise 46,625 $6.80 $317K
2026-08-12 Mazabraud Yann officer Sale 2,300 $111.80 $257K
2026-08-12 Mazabraud Yann officer Sale 1,000 $112.86 $113K
2026-08-12 Mazabraud Yann officer Sale 3,605 $114.70 $413K
2026-08-12 Mazabraud Yann officer Sale 14,568 $115.43 $1.68M
2026-08-12 Mazabraud Yann officer Sale 18,208 $116.49 $2.12M
2026-08-12 Mazabraud Yann officer Sale 17,319 $117.47 $2.03M
2026-04-01 Mazabraud Yann officer Option exercise 12,875 — —
2026-04-01 Popovits Kimberly J director Award 6,808 — —
2026-04-01 Popovits Kimberly J director Award 10,257 $88.12 $904K
2026-04-01 Mazabraud Yann officer Option exercise 10,375 — —
2026-04-01 Mazabraud Yann officer Option exercise 2,500 — —
2026-03-12 Mathers Edward T director J 4,199 — —
2026-03-04 German Christopher Paul officer Option exercise 1,500 $17.97 $27K
2026-03-04 German Christopher Paul officer Sale 5,614 $89.56 $503K
2026-03-02 Mazabraud Yann officer Award 35,000 $94.94 $3.32M
Showing 25 of 80

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-09-30 10,767,698 14.14 +4.7%
2026-09-15 10,287,811 20.06 -0.1%
2026-08-31 10,303,031 21.89 +1.5%
2026-08-14 10,154,327 12.24 +7.6%
2026-07-31 9,440,417 16.17 -1.4%
2026-07-15 9,574,527 13.74 -0.9%
2026-06-30 9,665,089 7.57 +20.7%
2026-06-15 8,005,303 11.58 +1.2%
2026-05-29 7,911,004 14.78 -4.5%
2026-05-15 8,282,367 8.28 +2.8%
2026-04-30 8,057,652 14.55 +2.9%
2026-04-15 7,830,912 12.81 +2.7%

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