PAUL SCHIMMEL, a director at $ATYR, bought 100,000 shares of the company on 05-27-2026 for an estimated $49,630. 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 14.7%. Following this trade, they now own 779,143 shares of this class of $ATYR stock.
$ATYR Insider Trading Activity
$ATYR insiders have traded $ATYR stock on the open market 4 times in the past 6 months. Of those trades, 1 have been purchases and 3 have been sales.
Here’s a breakdown of recent trading of $ATYR stock by insiders over the last 6 months:
- PAUL SCHIMMEL purchased 100,000 shares for an estimated $49,630
- SANJAY SHUKLA (President and CEO) sold 3,745 shares for an estimated $3,655
- JILL MARIE BROADFOOT (Chief Financial Officer) sold 1,558 shares for an estimated $1,520
- NANCY DENYES (General Counsel) sold 1,118 shares for an estimated $1,091
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.
$ATYR Hedge Fund Activity
We have seen 62 institutional investors add shares of $ATYR stock to their portfolio, and 64 decrease their positions in their most recent quarter.
Here are some of the largest recent moves:
- UBS GROUP AG added 2,241,916 shares (+137.9%) to their portfolio in Q1 2026, for an estimated $1,748,694
- GSA CAPITAL PARTNERS LLP added 1,923,907 shares (+272.2%) to their portfolio in Q4 2025, for an estimated $1,506,611
- MILLENNIUM MANAGEMENT LLC added 1,641,246 shares (+inf%) to their portfolio in Q1 2026, for an estimated $1,280,171
- ROSALIND ADVISORS, INC. removed 1,039,080 shares (-100.0%) from their portfolio in Q1 2026, for an estimated $810,482
- TWO SIGMA ADVISERS, LP added 841,350 shares (+inf%) to their portfolio in Q4 2025, for an estimated $658,861
- TWO SIGMA INVESTMENTS, LP added 690,122 shares (+151.9%) to their portfolio in Q1 2026, for an estimated $538,295
- TANG CAPITAL MANAGEMENT LLC removed 671,134 shares (-100.0%) from their portfolio in Q4 2025, for an estimated $525,565
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.
