// company-profile
Rhythm Pharmaceuticals, Inc.
RYTMExchangeNasdaqSectorPharmaceutical PreparationsInc.DEFilings175Insiders16
// api This Rhythm Pharmaceuticals, Inc. insider-trading data is served live by the Form4API insider trading API. Get the same data via API.
// activity-summary
No insider transactions in the last 30 days.
// 90-day insight
Over the last 90 days, Rhythm Pharmaceuticals, Inc. insiders bought $241K (13 transactions) and sold $428K (1 transaction).
- Most active insider: German Christopher Paul with 7 transactions totaling $615K.
- Largest single sale: $428K by German Christopher Paul on May 15, 2026.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Rhythm Pharmaceuticals, Inc. as of 2026-03-31
Total reported AUM
$5.82B
QoQ change
-16.1%
Reporting period
2026-03-31
#1
RA CAPITAL MANAGEMENT, L.P.
CIK 1346824
$579.8M
6.7M shares
#2
BAKER BROS. ADVISORS LP
CIK 1263508
$487.4M
5.6M shares
#3
PRIMECAP MANAGEMENT CO/CA/
CIK 763212
$297.2M
3.4M shares
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| May 18, 2026 | Smith Hunter C | RYTM | Option Exercise | 3,000 | $0.00 | $0K |
| May 18, 2026 | Smith Hunter C | RYTM | Option Exercise | 3,000 | $17.87 | $54K |
| May 15, 2026 | German Christopher Paul | RYTM | Option Exercise | 1,406 | $17.97 | $25K |
| May 15, 2026 | German Christopher Paul | RYTM | Option Exercise | 1,687 | $56.69 | $96K |
| May 15, 2026 | German Christopher Paul | RYTM | Sale | 4,643 | $92.21 | $428K |
45 more transactions hidden
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