Ultragenyx Pharmaceutical Inc. · NASDAQ:RARE

Madison Avenue Partners, LP reported a 6.40% stake in Ultragenyx Pharmaceutical Inc. (Schedule 13G)

Event Oct 13, 2026 · Filed Oct 20, 2026

Madison Avenue Partners, LP reported a 6.40% stake in Ultragenyx Pharmaceutical Inc., 6,307,798 shares, as a passive investor on Oct 13, 2026. Filed Oct 20, 2026 (Schedule 13G).

Stake
6.40%
Shares
6,307,798
Intent
Passive
What changed
Crossed above 5%
Filed together
6 holders

The filing in full

HolderStakeShares
Madison Avenue International LP6.40%6,307,798
Madison Avenue Partners, LP6.40%6,307,798
EMAI Management, LLC6.40%6,307,798
Madison Avenue GP, LLC6.40%6,307,798
Caraway Jackson Investments LLC6.40%6,307,798
Eli Samaha6.40%6,307,798

Source

Download original · View original at SEC

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