Li David H

David H. Li's insider record spans 291 transactions across three companies, and each shows a distinct pattern. At CMC Materials (CCMP), where he filed 269 transactions from 2008 until the company's 2022 acquisition closed, he disposed of 690,499 shares against zero bought — the relationship ended with three $0-priced 'disposed of' transactions on 2022-07-06 totaling 67,913 shares, the standard mechanics of shares converting out in a merger rather than an open-market exit. At Hexcel (HXL), where his 16 filings run from January 2025 through July 2026, the pattern is the opposite: every transaction is either an award grant or an option exercise, and he has sold or surrendered zero shares — full accumulation, with the most recent activity a 239-share award and 373-share exercise on 2026-07-10. At Ingevity (NGVT), Li received a large one-time grant of 418,719 shares across four award transactions on 2025-04-07; exactly one year later, on 2026-04-07, 16,676 shares were withheld to cover taxes on a vesting tranche — just 4.0% of the original grant, meaning Li has retained the vast majority of that award rather than converting it to cash.