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RHYTHM PHARM (RYTM)
NASDAQ
$105.33+$3.94 (+3.88%)
Price as of Jun 23, 2026 3:26 PM EDT- $7.0BMarket Cap
- 63.19%1-Year Change
- BiotechnologyIndustry
RHYTHM PHARM (RYTM)
$105.33+$3.94 (+3.88%)
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%) | Mar 31, 2026 |
BLACKROCK, INC. | 9.09% | 6.2M | -60,183 (-0.96%) | Mar 31, 2026 |
VANGUARD GROUP INC | 9.05% | 6.2M | +1.2M (+19.55%) | Dec 31, 2025 |
BAKER BROS. ADVISORS LP | 8.17% | 5.6M | 0 (0.00%) | Mar 31, 2026 |
PRIMECAP MANAGEMENT CO/CA/ | 4.98% | 3.4M | -61,160 (-1.79%) | Mar 31, 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 | 4.78% | 3.3M | -663,880 (-20.26%) | Jan 31, 2026 |
iSHARES TRUST | 3.34% | 2.3M | -58,829 (-2.57%) | Mar 31, 2026 |
FRANKLIN VALUE INVESTORS TRUST | 2.67% | 1.8M | 0 (0.00%) | Jan 31, 2026 |
Federated Hermes Equity Funds | 1.72% | 1.2M | -336,100 (-28.53%) | Jan 31, 2026 |
SMALLCAP WORLD FUND INC | 1.57% | 1.1M | +91,746 (+8.50%) | Mar 31, 2026 |
SPDR SERIES TRUST | 1.37% | 941,162 | +16,154 (+1.72%) | Mar 31, 2026 |
Current Ownership Distribution
- Institutions1.6B (83.89%)
- Mutual Funds270.9M (14.40%)
- Insiders32.1M (1.70%)
- Other0 (0.00%)
Insider Transactions
- 1.70% (32.1M)Current InsiderOwnership (%, shares)
- 0Number of InsiderBuying (last 12 months)
- $0.00Amount of InsiderBuying (last 12 months)
- 5Number of InsiderSelling (last 12 months)
- $181.6MAmount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
Popovits Kimberly J | Award | Apr 01, 2026 | $0.00 | 6,808 | $0.00 | 6,808 |
Mazabraud Yann EVP, Head of International | Exempt | Apr 01, 2026 | $0.00 | 10,375 | $0.00 | 10,375 |
Popovits Kimberly J | Award | Apr 01, 2026 | $0.00 | 10,257 | $0.00 | 10,257 |
Mazabraud Yann EVP, Head of International | Exempt | Apr 01, 2026 | $0.00 | 2,500 | $0.00 | 5,000 |
Mazabraud Yann EVP, Head of International | Exempt | Apr 01, 2026 | $0.00 | 12,875 | $0.00 | 66,030 |
Mathers Edward T | Other | Mar 12, 2026 | $0.00 | 4,199 | $0.00 | 14,168 |
German Christopher Paul Corporate Controller & CAO | Exempt | Mar 04, 2026 | $0.00 | 1,500 | $0.00 | 3,731 |
German Christopher Paul Corporate Controller & CAO | Exempt | Mar 04, 2026 | $26,955.00 | 1,500 | $17.97 | 5,753 |
German Christopher Paul Corporate Controller & CAO | Sell | Mar 04, 2026 | $502,789.84 | 5,614 | $89.56 | 160 |
Mathers Edward T | Other | Mar 02, 2026 | $0.00 | 4,198 | $0.00 | 9,969 |
Mazabraud Yann EVP, Head of International | Award | Mar 02, 2026 | $0.00 | 35,000 | $0.00 | 35,000 |
Mazabraud Yann EVP, Head of International | Exempt | Feb 14, 2026 | $0.00 | 10,000 | $0.00 | 30,000 |
Mazabraud Yann EVP, Head of International | Exempt | Feb 14, 2026 | $0.00 | 10,000 | $0.00 | 53,155 |
Smith Hunter C Chief Financial Officer | Sell | Feb 12, 2026 | $28,108.71 | 292 | $96.26 | 119,766 |
Smith Hunter C Chief Financial Officer | Sell | Feb 12, 2026 | $39,068.52 | 400 | $97.67 | 119,366 |
Smith Hunter C Chief Financial Officer | Sell | Feb 12, 2026 | $79,192.48 | 800 | $98.99 | 118,566 |
Smith Hunter C Chief Financial Officer | Sell | Feb 12, 2026 | $10,010.00 | 100 | $100.10 | 118,466 |
Cramer Pamela J. Chief Human Resources Officer | Award | Feb 11, 2026 | $0.00 | 11,650 | $0.00 | 11,650 |
Mazabraud Yann EVP, Head of International | Award | Feb 11, 2026 | $0.00 | 23,350 | $0.00 | 23,350 |
German Christopher Paul Corporate Controller & CAO | Award | Feb 11, 2026 | $0.00 | 5,215 | $0.00 | 5,215 |
Meeker David P President and CEO | Award | Feb 11, 2026 | $0.00 | 71,900 | $0.00 | 71,900 |
Garfield Alastair Chief Scientific Officer | Award | Feb 11, 2026 | $0.00 | 16,650 | $0.00 | 16,650 |
Smith Hunter C Chief Financial Officer | Award | Feb 11, 2026 | $0.00 | 25,000 | $0.00 | 25,000 |
Chien Jennifer EVP, Head of North America | Award | Feb 11, 2026 | $0.00 | 21,650 | $0.00 | 21,650 |
Meeker David P President and CEO | Award | Feb 11, 2026 | $0.00 | 107,850 | $0.00 | 107,850 |
Cramer Pamela J. Chief Human Resources Officer | Award | Feb 11, 2026 | $0.00 | 17,500 | $0.00 | 17,500 |
Smith Hunter C Chief Financial Officer | Award | Feb 11, 2026 | $0.00 | 37,500 | $0.00 | 37,500 |
Chien Jennifer EVP, Head of North America | Award | Feb 11, 2026 | $0.00 | 32,500 | $0.00 | 32,500 |
Smith Hunter C Chief Financial Officer | Sell | Feb 11, 2026 | $222,906.42 | 2,266 | $98.37 | 120,558 |
Shulman Joseph Chief Technical Officer | Award | Feb 11, 2026 | $0.00 | 15,000 | $0.00 | 15,000 |