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RHYTHM PHARM (RYTM)
NASDAQ
$110.01+$0.01 (+0.009%)
Price as of Aug 21, 2026 7:30 PM EDT- $7.6BMarket Cap
- 6.52%1-Year Change
- BiotechnologyIndustry
RHYTHM PHARM (RYTM)
$110.01+$0.01 (+0.009%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
BLACKROCK FUNDING, INC. /DE | 10.13% | 7.0M | +61,457 (+0.88%) | Dec 31, 2024 |
BLACKROCK INC. | 9.83% | 6.7M | +212,277 (+3.15%) | Jun 30, 2024 |
RA CAPITAL MANAGEMENT, L.P. | 9.72% | 6.7M | 0 (0.00%) | Jun 30, 2026 |
VANGUARD GROUP INC | 9.05% | 6.2M | +1.2M (+19.55%) | Dec 31, 2025 |
BLACKROCK, INC. | 8.98% | 6.2M | -80,249 (-1.30%) | Jun 30, 2026 |
BAKER BROS. ADVISORS LP | 8.17% | 5.6M | 0 (0.00%) | Jun 30, 2026 |
PRIMECAP MANAGEMENT CO/CA/ | 4.62% | 3.2M | -248,656 (-7.85%) | Jun 30, 2026 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
VANGUARD INDEX FUNDS | 7.74% | 5.3M | +181,053 (+3.41%) | Mar 31, 2026 |
PRIMECAP Odyssey Funds | 4.69% | 3.2M | -58,320 (-1.81%) | Apr 30, 2026 |
FRANKLIN VALUE INVESTORS TRUST | 2.67% | 1.8M | 0 (0.00%) | Apr 30, 2026 |
Federated Hermes Equity Funds | 1.68% | 1.2M | -25,700 (-2.23%) | Apr 30, 2026 |
SMALLCAP WORLD FUND INC | 1.57% | 1.1M | +91,746 (+8.50%) | Mar 31, 2026 |
SPDR SERIES TRUST | 1.37% | 941,162 | 0 (0.00%) | Apr 30, 2026 |
JPMORGAN TRUST II | 1.24% | 852,562 | 0 (0.00%) | May 31, 2026 |
Current Ownership Distribution
- Institutions1.7B (83.79%)
- Mutual Funds288.7M (14.59%)
- Insiders32.1M (1.62%)
- Other0 (0.00%)
Insider Transactions
- 1.62% (32.1M)Current InsiderOwnership (%, shares)
- 0Number of InsiderBuying (last 12 months)
- $0.00Amount of InsiderBuying (last 12 months)
- 7Number of InsiderSelling (last 12 months)
- $194.5MAmount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
Joshi Manher Chief Medical Officer | Award | Aug 17, 2026 | $0.00 | 50,000 | $0.00 | 50,000 |
Joshi Manher Chief Medical Officer | Award | Aug 17, 2026 | $0.00 | 25,000 | $0.00 | 25,000 |
Shulman Joseph Chief Technical Officer | Exempt | Aug 13, 2026 | $0.00 | 2,024 | $0.00 | 5,945 |
Chien Jennifer EVP, Head of North America | Exempt | Aug 13, 2026 | $0.00 | 35,000 | $0.00 | 36,283 |
Shulman Joseph Chief Technical Officer | Exempt | Aug 13, 2026 | $13,763.20 | 2,024 | $6.80 | 20,994 |
Chien Jennifer EVP, Head of North America | Exempt | Aug 13, 2026 | $0.00 | 21,601 | $0.00 | 0 |
Shulman Joseph Chief Technical Officer | Sell | Aug 13, 2026 | $608,210.25 | 5,079 | $119.75 | 15,915 |
Chien Jennifer EVP, Head of North America | Exempt | Aug 13, 2026 | $850,150.00 | 35,000 | $24.29 | 54,233 |
Chien Jennifer EVP, Head of North America | Exempt | Aug 13, 2026 | $146,886.80 | 21,601 | $6.80 | 75,834 |
Chien Jennifer EVP, Head of North America | Sell | Aug 13, 2026 | $8.9M | 75,834 | $117.38 | 0 |
Mazabraud Yann EVP, Head of International | Exempt | Aug 12, 2026 | $0.00 | 46,625 | $0.00 | 35,875 |
Mazabraud Yann EVP, Head of International | Exempt | Aug 12, 2026 | $317,050.00 | 46,625 | $6.80 | 112,655 |
Mazabraud Yann EVP, Head of International | Sell | Aug 12, 2026 | $257,138.16 | 2,300 | $111.80 | 110,355 |
Mazabraud Yann EVP, Head of International | Sell | Aug 12, 2026 | $112,856.00 | 1,000 | $112.86 | 109,355 |
Mazabraud Yann EVP, Head of International | Sell | Aug 12, 2026 | $413,477.28 | 3,605 | $114.70 | 105,750 |
Mazabraud Yann EVP, Head of International | Sell | Aug 12, 2026 | $1.7M | 14,568 | $115.43 | 91,182 |
Mazabraud Yann EVP, Head of International | Sell | Aug 12, 2026 | $2.1M | 18,208 | $116.49 | 72,974 |
Mazabraud Yann EVP, Head of International | Sell | Aug 12, 2026 | $2.0M | 17,319 | $117.47 | 55,655 |
Garfield Alastair Chief Scientific Officer | Exempt | Jul 01, 2026 | $0.00 | 4,445 | $0.00 | 8,888 |
Garfield Alastair Chief Scientific Officer | Exempt | Jul 01, 2026 | $0.00 | 4,445 | $0.00 | 12,208 |
Garfield Alastair Chief Scientific Officer | In Kind | Jul 01, 2026 | $237,381.50 | 2,150 | $110.41 | 10,058 |
GOOD JENNIFER L | Award | Jun 24, 2026 | $0.00 | 3,691 | $0.00 | 3,691 |
JEAN CHRISTOPHE | Award | Jun 24, 2026 | $0.00 | 3,691 | $0.00 | 3,691 |
MCGIRR DAVID W J | Award | Jun 24, 2026 | $0.00 | 3,691 | $0.00 | 3,691 |
JEAN CHRISTOPHE | Award | Jun 24, 2026 | $0.00 | 2,324 | $0.00 | 2,324 |
GOOD JENNIFER L | Award | Jun 24, 2026 | $0.00 | 2,324 | $0.00 | 2,324 |
MCGIRR DAVID W J | Award | Jun 24, 2026 | $0.00 | 2,324 | $0.00 | 2,324 |
JEAN CHRISTOPHE | Exempt | Jun 23, 2026 | $0.00 | 4,712 | $0.00 | 11,712 |
GOOD JENNIFER L | Exempt | Jun 23, 2026 | $0.00 | 4,712 | $0.00 | 11,712 |
JEAN CHRISTOPHE | Exempt | Jun 23, 2026 | $0.00 | 4,712 | $0.00 | 0 |