Form4insider filings, from the source

Company · CIK 0001649904 · SIC 2834 — Pharmaceutical Preparations · Nasdaq

RHYTHM PHARMACEUTICALS, INC. · RYTM

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $11.8M · 2net −$11.8M
$10k$10k$100k$100k$1M$1M$10M$10MbuyssalesAug 28Sep 2Sep 7Sep 12Sep 17Sep 23Sep 28

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 14, 2026 SForm 4 →Sep 14, 7:37 pm EDTDavid P MeekerPresident and CEO, Director50,000$102.67$5,133,442239,258−17.3%10b5-1
Sep 14, 2026 MForm 4 →Sep 14, 7:37 pm EDTDavid P MeekerPresident and CEO, Director50,000$6.05$302,500289,258—10b5-1
Aug 31, 2026 SForm 4 →Sep 1, 4:22 pm EDTHunter C SmithChief Financial Officer62,774$105.46$6,619,913114,024−35.5%10b5-1
Aug 31, 2026 MForm 4 →Sep 1, 4:22 pm EDTHunter C SmithChief Financial Officer57,187$25.79$1,474,853176,798—10b5-1

Reported at this company — derivatives (options, RSUs, warrants)

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 14, 2026 MForm 4 →Sep 14, 7:37 pm EDTDavid P MeekerPresident and CEO, Director50,000——15,431—10b5-1
Aug 31, 2026 MForm 4 →Sep 1, 4:22 pm EDTHunter C SmithChief Financial Officer57,187——3,813—10b5-1