Richard Peter Marshall, a director at $SER, bought 12,183 shares of the company on 05-19-2026 for an estimated $20,101. 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 inf%. Following this trade, they now own 12,183 shares of this class of $SER stock.
$SER Insider Trading Activity
$SER insiders have traded $SER stock on the open market 22 times in the past 6 months. Of those trades, 1 have been purchases and 21 have been sales.
Here’s a breakdown of recent trading of $SER stock by insiders over the last 6 months:
- RANDALL MOREADITH (Chief Scientific Officer) has made 0 purchases and 21 sales selling 117,000 shares for an estimated $335,104.
- RICHARD PETER MARSHALL purchased 12,183 shares for an estimated $20,101
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.
$SER Hedge Fund Activity
We have seen 12 institutional investors add shares of $SER stock to their portfolio, and 8 decrease their positions in their most recent quarter.
Here are some of the largest recent moves:
- SIO CAPITAL MANAGEMENT, LLC added 1,000,000 shares (+inf%) to their portfolio in Q1 2026, for an estimated $1,940,000
- BROADWOOD CAPITAL INC removed 54,484 shares (-100.0%) from their portfolio in Q1 2026, for an estimated $105,698
- BLACKROCK, INC. added 41,015 shares (+237.8%) to their portfolio in Q1 2026, for an estimated $79,569
- JANE STREET GROUP, LLC added 39,653 shares (+inf%) to their portfolio in Q1 2026, for an estimated $76,926
- GEODE CAPITAL MANAGEMENT, LLC added 34,564 shares (+113.7%) to their portfolio in Q1 2026, for an estimated $67,054
- AVIDIAN WEALTH ENTERPRISES, LLC added 18,800 shares (+inf%) to their portfolio in Q1 2026, for an estimated $36,472
- LINSCOMB WEALTH, INC. removed 18,800 shares (-100.0%) from their portfolio in Q1 2026, for an estimated $36,472
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.
This article is not financial advice. See Quiver Quantitative's disclaimers for more information.
