Insider Sale: 10% owner at $SI Sells 20,516 Shares

By: Quiver InsiderRadar, Automated

Posted: 7 hours ago / Aug. 25, 2026 12:02 a.m. UTC

Healthcare Holding B.V. Gilde, a 10% owner of $SI, sold 20,516 shares of the company on 08-21-2026 for an estimated $463,866. We received data on the trade from a recent SEC filing. This was a sale of approximately 0.9% of their shares of this class of stock. Following this trade, they now own 2,187,791 shares of this class of $SI stock.

$SI Insider Trading Activity

$SI insiders have traded $SI stock on the open market 18 times in the past 6 months. Of those trades, 3 have been purchases and 15 have been sales.

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

• HEALTHCARE HOLDING B.V. GILDE has made 0 purchases and 9 sales selling 193,372 shares for an estimated $4,412,940.
• MATTHEW FRASER AHEARN (Chief Operating Officer) has made 0 purchases and 6 sales selling 42,500 shares for an estimated $839,060.
• ROBERT JOSEPH BALL (CEO & Executive Chairman) purchased 2,200 shares for an estimated $33,392
• JEFFREY S. POINTS (Chief Financial Officer) purchased 2,000 shares for an estimated $30,000
• RICHARD BUCHHOLZ purchased 1,000 shares for an estimated $14,840

To track insider transactions, check out Quiver Quantitative’s insider trading dashboard. You can access data on insider stock transactions through the Quiver Quantitative API insider transaction endpoint.

$SI Hedge Fund Activity

We have seen 54 institutional investors add shares of $SI stock to their portfolio, and 23 decrease their positions in their most recent quarter.

Here are some of the largest recent moves:

• KCM CAPITAL INC added 265,000 shares (+757.1%) to their portfolio in Q2 2026, for an estimated $5,374,200
• DRIEHAUS CAPITAL MANAGEMENT LLC added 253,760 shares (+inf%) to their portfolio in Q2 2026, for an estimated $5,146,252
• ALYESKA INVESTMENT GROUP, L.P. removed 232,984 shares (-100.0%) from their portfolio in Q2 2026, for an estimated $4,724,915
• PARKMAN HEALTHCARE PARTNERS LLC added 226,212 shares (+inf%) to their portfolio in Q2 2026, for an estimated $4,587,579
• SIO CAPITAL MANAGEMENT, LLC removed 210,641 shares (-100.0%) from their portfolio in Q2 2026, for an estimated $4,271,799
• MILLENNIUM MANAGEMENT LLC removed 193,942 shares (-100.0%) from their portfolio in Q2 2026, for an estimated $3,933,143
• JPMORGAN CHASE & CO added 124,437 shares (+inf%) to their portfolio in Q2 2026, for an estimated $2,523,582

To track hedge funds’ stock portfolios, check out Quiver Quantitative’s institutional holdings dashboard. You can access data on hedge funds moves and 13F filings through the Quiver Quantitative API 13F endpoint.

$SI Price Targets

Multiple analysts have issued price targets for $SI recently. We have seen 2 analysts offer price targets for $SI in the last 6 months, with a median target of $21.5.

Here are some recent targets:

• Matt O’Brien from Piper Sandler set a target price of $19.0 on 05/08/2026
• Ryan Zimmerman from BTIG set a target price of $24.0 on 03/11/2026

This article is not financial advice. See Quiver Quantitative’s disclaimers for more information.