Company profile
Rhythm Pharmaceuticals, Inc. Insider Trading
RYTMEvery SEC Form 4 insider trading filing for Rhythm Pharmaceuticals, Inc. (RYTM) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?
- Exchange
- Nasdaq
- Sector
- Pharmaceutical Preparations
- CIK
- 0001649904
- Filings
- 187
- Insiders
- 17
- Last filing
- 2026-08-17
Activity summary
Recent insider activity is bullish. Over the last 30 days, 2 insiders purchased shares. Buying was led by Joshi Manher.
Three year balance
Buy and sell value by quarter, Q4 23 to Q3 26. Rhythm Pharmaceuticals, Inc. insiders were net sellers in every quarter shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $17.3M.
90 day insight
Over the last 90 days, Rhythm Pharmaceuticals, Inc. insiders bought $1.0M (26 transactions) and sold $237K (1 transaction).
- Most active insider: Mazabraud Yann with 8 transactions totaling $6.9M.
- Largest single sale: $8.9M by Lee Jennifer Kayden on Aug 13, 2026.
- 93% of recent sales were pre-scheduled 10b5-1 trades — typically less informative than open-market activity.
Activity skews bullish — buys outpace sales.
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 17, 2026 | Joshi Manher | RYTM | Award | 50,000 | — | — |
| Aug 17, 2026 | Joshi Manher | RYTM | Award | 25,000 | — | — |
| Aug 13, 2026 | Garfield Alastair | RYTM | Sale10b5 | 3,400 | $118.28 | $402K |
| Aug 13, 2026 | Garfield Alastair | RYTM | Sale10b5 | 2,007 | $116.11 | $233K |
| Aug 13, 2026 | Lee Jennifer Kayden | RYTM | Option Exercise10b5 | 21,601 | $6.80 | $147K |
45 more transactions hidden
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Query this yourself
The same rows, over the API.
curl "https://api.form4api.com/v1/transactions?ticker=RYTM" \
-H "X-Api-Key: $KEY"Top insiders
By total value filed.
Institutional Ownership
Top 13F-HR holders of Rhythm Pharmaceuticals, Inc. as of 2026-06-30
Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →