Insider Purchase: Director at $SION Buys 550,000 Shares

ADVISORS LLC ORBIMED, a director at $SION, bought 550,000 shares of the company on 02-10-2025 for an estimated $9,900,000. This trade was reported by Quiver Quantitative using data from a recent SEC filing. This increased their holdings of this class of stock by approximately 17.4%. Following this trade, they now own 3,704,959 shares of this class of $SION stock.

$SION Insider Trading Activity

$SION insiders have traded $SION stock on the open market 4 times in the past 6 months. Of those trades, 4 have been purchases and 0 have been sales.

Here’s a breakdown of recent trading of $SION stock by insiders over the last 6 months:

• ADVISORS LLC ORBIMED purchased 550,000 shares for an estimated $9,900,000
• PETER A. THOMPSON purchased 550,000 shares for an estimated $9,900,000
• BRUCE BOOTH purchased 60,000 shares for an estimated $1,080,000
• VENTURE FUND XI, L.P. ATLAS purchased 60,000 shares for an estimated $1,080,000

To track insider transactions, check out Quiver Quantitative's insider trading dashboard.

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