NASDAQ: RYTM
Rhythm Pharmaceuticals Inc Stock Ownership - Who owns Rhythm Pharmaceuticals?

Insider buying vs selling

Have Rhythm Pharmaceuticals Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Hunter C. SmithChief Financial Officer2026-05-183,000$17.87
$53.61kBuy
Christopher Paul GermanCorporate Controller CAO2026-05-154,643$92.21
$428.13kSell
Christopher Paul GermanCorporate Controller CAO2026-05-151,687$56.69
$95.64kBuy
Christopher Paul GermanCorporate Controller CAO2026-05-151,349$49.23
$66.41kBuy
Christopher Paul GermanCorporate Controller CAO2026-05-151,406$17.97
$25.27kBuy
Christopher Paul GermanCorporate Controller CAO2026-03-041,500$17.97
$26.96kBuy
Christopher Paul GermanCorporate Controller CAO2026-03-045,614$89.56
$502.79kSell
Hunter C. SmithChief Financial Officer2026-03-026,099$6.80
$41.47kBuy
Christopher Paul GermanCorporate Controller CAO2026-03-01342$94.94
$32.47kSell
Hunter C. SmithChief Financial Officer2026-02-19800$102.10
$81.68kSell

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Net Insider Buy/Sell (L12M) Ownership

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RYTM Shareholders

What type of owners hold Rhythm Pharmaceuticals Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Ra Capital Management LP9.73%6,666,837$584.41MInstitution
Blackrock Inc9.10%6,237,151$546.75MInstitution
Baker Bros Advisors LP8.18%5,604,483$491.29MInstitution
Ra Capital Management LP6.36%4,360,860$382.27MInsider
Primecap Management Co4.99%3,417,509$299.58MInstitution
Vanguard Portfolio Management LLC4.44%3,040,718$266.55MInstitution
Vanguard Capital Management LLC4.33%2,967,825$260.16MInstitution
Orbimed Advisors LLC4.01%2,750,079$241.07MInsider
Perceptive Advisors LLC3.46%2,373,795$208.09MInstitution
State Street Corp3.31%2,271,851$199.15MInstitution

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RYTM vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
RYTM88.74%11.26%Net SellingNet Buying
MIRM56.48%43.52%Net BuyingNet Selling
CNTA91.39%8.61%Net SellingNet Selling
PTCT86.91%13.09%Net SellingNet Selling
LQDA50.69%49.31%Net SellingNet Selling

Rhythm Pharmaceuticals Stock Ownership FAQ

Who owns Rhythm Pharmaceuticals?

Rhythm Pharmaceuticals (NASDAQ: RYTM) is owned by 107.36% institutional shareholders, 13.63% Rhythm Pharmaceuticals insiders, and 0.00% retail investors. Ra Capital Management LP is the largest individual Rhythm Pharmaceuticals shareholder, owning 4.36M shares representing 6.36% of the company. Ra Capital Management LP's Rhythm Pharmaceuticals shares are currently valued at $385.41M.

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