Insiders who reported open-market trades in the last 12 months at the companies Leon O. Moulder Jr. files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
Ying Du - $8.58M in ZLAB purchases and sales in the last 12 months
Leon O. Moulder Jr. is a corporate insider of Zai Lab Ltd (ZLAB). InsiderAlpha holds 11 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Leon O. Moulder Jr. last file a Form 4?
The most recent primary Form 4 on record is dated 22 June 2026, one of 11 filings going back to 2024.
Has Leon O. Moulder Jr. been buying or selling stock?
Recorded transactions: 11 open-market purchases ($5.76M) and 0 open-market sales across all tracked filings.
Leon O. Moulder Jr. files SEC Form 4 reports at Zai Lab Ltd (ZLAB). 11 SEC Form 4 filings on record going back to 2024, most recently on 22 June 2026. Most recent open-market trade: bought $1.01M of ZBIO on 19 May 2026. Lifetime open-market purchases: $5.76M.
Recent transactions
13
The latest 13 SEC Form 4 transactions reported by Leon O. Moulder Jr..
InsiderAlpha's records for Leon O. Moulder Jr. go back to 2024: 11 primary Form 4 filings, an average of 3.7 per year. The typical open-market purchase is $524K (11 buys totaling $5.76M). The largest single buy on record is $1.02M of ZBIO in 2026. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
