InsidersTradesSigma
Total declarations
Companies
▲ Purchases (0 ops.)
▼ Sales (2 ops.)
Insider track record
Board DirectorDisclosed buys
0
Disclosed sells
2
T+90 hit rate
0%
T+90 mean return
-5.7%
Across 2 buy signals with a settled T+90 return. Return basis: close on the day after publication.
Signal history
Explore the full record of transactions filed by Gerst Diane G., Director. Director active across 2 companies, notably Amphastar Pharmaceuticals, Inc.. Aggregated, 12 reports have been logged. Breakdown: 0 buy · 2 sells. Total volume traded: €111k. History available since 7 June 2021. The latest transaction was filed on 1 June 2026 (Attribution). Regulator: SEC (Form 4). All data is free.
Declarations12 total
8,143 shares0Common StockSEC:0001611283-26-000003:0
3,076 shares0Common StockSEC:0001415889-24-015660:0
2,716 shares0Common StockSEC:0001104659-23-068999:0
1,520 shares@ US$20.0811.1% of flowCommon StockSEC:0001104659-22-080883:0
1,520 shares@ US$37.234620.6% of flowCommon StockSEC:0001104659-22-080883:1
1,521 shares@ US$20.0811.2% of flowCommon StockSEC:0001104659-22-079289:0
1,521 shares@ US$36.255720.3% of flowCommon StockSEC:0001104659-22-079289:1
1,813 shares@ US$20.0813.1% of flowCommon StockSEC:0001104659-22-077826:0
3,333 shares@ US$20.0323.6% of flowCommon StockSEC:0001104659-22-077306:0
4,163 shares0Common StockSEC:0001104659-22-071076:0
3,009 shares0Common StockSEC:0001104659-21-078409:0
3,009 shares0Common StockSEC:0001104659-21-078409
12 of 12 declarations
About Gerst Diane G.
Diane G. Gerst is a Director at Amphastar Pharmaceuticals, Inc. As a board member, she contributes to the governance of the company and the development of its strategy. Her experience in the pharmaceutical sector allows her to provide important perspectives to the board.
