Filings (90d)
0
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies John D. Diekman 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
- Frazor Titus Edmondson III - $1.01M in ZLAB purchases and sales in the last 12 months
- Rafael Amado - $675K in ZLAB purchases and sales in the last 12 months
- William Lis - $340K in ZLAB purchases and sales in the last 12 months
- Joshua L. Smiley - $294K in ZLAB purchases and sales in the last 12 months
- Yajing Chen - $224K in ZLAB purchases and sales in the last 12 months
More insiders (A-Z)
Browse nearby insider profiles in alphabetical order.
Frequently asked questions
Who is John D. Diekman?
John D. Diekman is a corporate insider of Zai Lab Ltd (ZLAB). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did John D. Diekman last file a Form 4?
The most recent primary Form 4 on record is dated 22 June 2026, one of 2 filings going back to 2025.
