List of insiders holdings for RHYTHM PHARMACEUTICALS INC.:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| # | Insider Holder Name | Report Date Time |
Shares Owned Directly Indirectly |
Total Shares Owned |
Filing |
| 1 | RA CAPITAL MANAGEMENT L.P. RA Capital Healthcare Fund LP Kolchinsky Peter Shah Rajeev M. Former 10% Owner |
2024-11-14 17:46:11 | 6,084,412 0 |
6,084,412 | Form 13G |
| 2 | BAKER BROS. ADVISORS LP Baker Bros. Advisors (GP) LLC BAKER FELIX BAKER JULIAN Former 10% owner |
2025-05-15 16:19:29 | 5,604,483 0 |
5,604,483 | Form 13G |
| 3 | Viswanathan Ravi 10% Owner |
2017-10-10 16:36:14 | 0 4,909,956 |
4,909,956 | Form 4 |
| 4 | SANDELL SCOTT D 10% Owner |
2017-10-10 16:35:43 | 0 4,909,956 |
4,909,956 | Form 4 |
| 5 | MOTT DAVID M 10% Owner |
2017-10-10 16:35:08 | 0 4,909,956 |
4,909,956 | Form 4 |
| 6 | KERINS PATRICK J 10% Owner |
2017-10-10 16:34:38 | 0 4,909,956 |
4,909,956 | Form 4 |
| 7 | BARRETT M JAMES 10% Owner |
2017-10-10 16:33:05 | 0 4,909,956 |
4,909,956 | Form 4 |
| 8 | BARRIS PETER J 10% Owner |
2017-10-10 16:33:33 | 0 4,909,956 |
4,909,956 | Form 4 |
| 9 | BASKETT FOREST 10% Owner |
2017-10-10 16:34:07 | 0 4,909,956 |
4,909,956 | Form 4 |
| 10 | MPM BIOVENTURES V L.P. EVNIN LUKE GADICKE ANSBERT MPM ASSET MANAGEMENT INVESTORS BV5 LLC MPM BIOVENTURES V GP LLC MPM BIOVENTURES V LLC 10% Owner |
2020-06-26 15:27:03 | 1,934,558 0 |
1,934,558 | Form 13D |
| 11 | Flynn James E Deerfield Mgmt L.P. DEERFIELD MANAGEMENT CO Deerfield Special Situations Fund L.P. Deerfield Mgmt III L.P. Deerfield Private Design Fund III L.P. Possible Member of 10% Group 10% Owner |
2022-02-11 16:17:09 | 1,867,467 0 |
1,867,467 | Form 13G |
| 12 | ORBIMED ADVISORS LLC OrbiMed Capital GP V LLC See Remarks 10% Owner |
2018-08-10 15:19:04 | 1,629,700 0 |
1,629,700 | Form 13D |
| 13 | ORBIMED ADVISORS LLC OrbiMed Capital GP V LLC ISALY SAMUEL D 10% Owner |
2018-08-10 15:19:04 | 1,629,700 0 |
1,629,700 | Form 13D |
| 14 | PFIZER INC 10% Owner |
2019-02-13 17:22:48 | 1,427,639 0 |
1,427,639 | Form 13G |
| 15 | Foley Todd Director |
2021-03-16 17:13:08 | 0 909,258 |
909,258 | Form 4 |
| 16 | Ipsen S.A. 10% Owner |
2017-10-10 16:22:25 | 0 833,099 |
833,099 | Form 4 |
| 17 | Gottesdiener Keith Michael CEO & President |
2020-03-11 16:01:46 | 766,127 0 |
766,127 | Form 4 |
| 18 | Hadley Harbor Master Investors (Cayman) L.P. 10% Owner |
2017-10-10 16:06:42 | 545,256 0 |
545,256 | Form 4 |
| 19 | THIRD ROCK VENTURES LP Third Rock Ventures GP L.P. TRV GP LLC STARR KEVIN P TEPPER ROBERT I LEVIN MARK J 10% Owner |
2020-02-05 16:36:37 | 323,526 0 |
323,526 | Form 13G |
| 20 | Meeker David P President and CEO |
2025-06-05 16:16:07 | 201,825 0 |
201,825 | Form 4 |
| 21 | Smith Hunter C Chief Financial Officer |
2025-07-11 16:31:09 | 145,003 0 |
145,003 | Form 4 |
| 22 | Desikan Nithya Chief Commercial Officer |
2020-09-01 16:05:32 | 141,563 0 |
141,563 | Form 4 |
| 23 | Lee Jennifer Kayden EVP, Head of North America |
2025-02-19 21:46:08 | 114,008 0 |
114,008 | Form 4 |
| 24 | Manning Linda Shapiro Chief Medical Officer |
2022-02-11 21:34:18 | 87,500 0 |
87,500 | Form 4 |
| 25 | Stewart Murray Chief Medical Officer |
2021-02-16 17:27:45 | 65,625 0 |
65,625 | Form 4 |
| 26 | Van der Ploeg Leonardus H.T. Chief Scientific Officer |
2019-06-03 16:00:34 | 64,561 0 |
64,561 | Form 4 |
| 27 | Fiedorek Fred T. Chief Medical Officer |
2018-02-16 16:03:11 | 50,000 0 |
50,000 | Form 4 |
| 28 | Kelner Simon Chief Human Resources Officer |
2021-02-16 17:28:31 | 43,750 0 |
43,750 | Form 4 |
| 29 | Mazabraud Yann EVP, Head of International |
2025-05-01 16:52:53 | 37,655 0 |
37,655 | Form 4 |
| 30 | Cramer Pamela J. Chief Human Resources Officer |
2025-07-29 18:56:28 | 20,814 0 |
20,814 | Form 4 |
| 31 | Shulman Joseph Chief Technical Officer |
2025-07-11 16:30:51 | 20,462 0 |
20,462 | Form 4 |
| 32 | Garfield Alastair Chief Scientific Officer |
2025-07-03 17:12:03 | 16,459 0 |
16,459 | Form 4 |
| 33 | Roberts William T. Chief Accounting Officer |
2023-03-31 21:38:20 | 12,872 0 |
12,872 | Form 4 |
| 34 | MCGIRR DAVID W J Director |
2025-06-26 16:30:46 | 11,749 0 |
11,749 | Form 4 |
| 35 | TETRAULT LYNN A. Director |
2025-06-26 16:33:39 | 11,749 0 |
11,749 | Form 4 |
| 36 | Arbuckle Stuart A Director |
2025-06-26 16:37:52 | 11,749 0 |
11,749 | Form 4 |
| 37 | JEAN CHRISTOPHE Director |
2025-06-26 16:41:21 | 11,749 0 |
11,749 | Form 4 |
| 38 | Mathers Edward T Director |
2025-06-26 16:45:07 | 11,749 0 |
11,749 | Form 4 |
| 39 | GOOD JENNIFER L Director |
2025-06-26 16:45:20 | 11,749 0 |
11,749 | Form 4 |
| 40 | Bedrosian Camille L Director |
2025-06-26 16:56:04 | 11,749 0 |
11,749 | Form 4 |
| 41 | German Christopher Paul Corporate Controller & CAO |
2025-07-11 16:30:31 | 11,703 0 |
11,703 | Form 4 |
| 42 | Exter Neil Director |
2018-06-08 16:06:46 | 10,000 0 |
10,000 | Form 4 |
| 43 | NEW ENTERPRISE ASSOCIATES 13 LP NEA Partners 13 Limited Partnership NEA 13 GP Ltd 10% Owner |
2024-04-30 19:31:21 | 0 0 |
0 | Form 13D |
| 44 | SILVERSTEIN JONATHAN Director |
2017-10-10 16:21:10 | 0 0 |
0 | Form 4 |