InsidersTradesSigma
Total declarations
Companies
▲ Purchases (5 ops.)
▼ Sales (4 ops.)
Insider track record
Board DirectorDisclosed buys
5
Disclosed sells
4
T+90 hit rate
11%
T+90 mean return
-23.1%
Across 9 buy signals with a settled T+90 return. Return basis: close on the day after publication.
Signal history
Browse the full record of transactions filed by Chang Carmen, Director. Officer active across 11 companies, notably Monte Rosa Therapeutics, Inc.. Aggregated, 24 disclosures have been published. Breakdown: 5 buys · 4 sells. Total volume traded: €6.9m. Activity tracked since 1 November 2021. The latest transaction was disclosed on 21 May 2025 (Attribution). Regulator: SEC (Form 4). All data is free.
Declarations24 total
34,260 sharesCommon StockSEC:0001193125-26-271323:0
21,765 shares0Common StockSEC:0000950170-25-077140:0
1,023,103 sharesCommon StockSEC:0000950170-24-107552:0
18,669 shares0Common StockSEC:0000950170-24-064775:0
17,857 shares@ US$56.00100.0% of flowCommon StockSEC:0000950170-24-047687:0
Ideal exit: 17 Jan 2025 (T+270)
333,333 shares@ US$3.00100.0% of flowCommon StockSEC:0001209191-23-042799:0
Ideal exit: 12 Apr 2024 (T+270)
2,000,000 shares0Common StockSEC:0001209191-23-037356:0
16,186 shares0Common StockSEC:0001209191-23-032646:0
1,226 shares@ US$11.8243100.0% of flowCommon StockSEC:0001209191-23-019642:0
1,226 shares0Common StockSEC:0001209191-23-010893:0
4,294,207 sharesCommon StockSEC:0001209191-22-059450:0
5,931,843 shares@ US$0.0654100.0% of flowCommon StockSEC:0001209191-22-032322:0
8,655 shares0Common StockSEC:0001209191-22-029409:0
2,631,578 shares@ US$1.900.23% mcap100.0% of flowCommon StockSEC:0001209191-22-024315:0
Ideal exit: 6 Jan 2023 (T+270)
37,570 shares@ US$1.32150.0% of flowCommon StockSEC:0001209191-21-071268
37,570 shares@ US$1.32150.0% of flowCommon StockSEC:0001209191-21-071268:0
22,985 shares0Common StockSEC:0001209191-21-062867:0
22,985 shares0Common StockSEC:0001209191-21-062867
1,851,852 sharesCommon StockSEC:0001209191-21-061093:0
Ideal exit: 15 Jul 2022 (T+270)
1,851,852 sharesCommon StockSEC:0001209191-21-061093
Ideal exit: 15 Jul 2022 (T+270)
2,715,968 sharesCommon StockSEC:0001209191-21-044039
2,715,968 sharesCommon StockSEC:0001209191-21-044039:0
5,864,718 sharesCommon StockSEC:0001209191-21-044190:0
5,864,718 sharesCommon StockSEC:0001209191-21-044190
24 of 24 declarations
About Chang Carmen
Carmen Chang is a Board Member at Monte Rosa Therapeutics, Inc., Bright Health Group Inc., and Trevi Therapeutics, Inc. She brings valuable expertise in corporate governance and strategy. Her role involves overseeing operations and ensuring that decisions made align with the long-term goals of the companies.
