Summary
Updated Aug 31, 2026
Wei Jiang is Director of WATERS CORP /DE/ (WAT). 13 SEC Form 4 filings on record going back to 2024, most recently on 2 July 2026. Most recent open-market trade: bought $145K of WAT on 18 March 2026. Lifetime open-market purchases: $145K.
Recent Transactions
14Every recent SEC Form 4 transaction Wei Jiang has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Wei Jiang go back to 2024: 13 primary Form 4 filings, an average of 4.3 per year. The typical open-market purchase is $145K (1 buy totaling $145K). The largest single buy on record is $145K of WAT in 2026. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Wei Jiang 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.
- BROADWOOD PARTNERS, L.P. - $62.75M of STAA open-market activity in the last 12 months
- Christopher A. Kuebler - $1.44M of WAT open-market activity in the last 12 months
- Richard H. Fearon - $306K of WAT open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Wei Jiang?
Wei Jiang is a corporate insider, tracked as Director of WATERS CORP /DE/ (WAT). InsiderAlpha holds 13 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Wei Jiang submitted recently?
2 primary Form 4 filings in the last 90 days, covering 2 companies.
Has Wei Jiang been buying or selling stock?
Recorded transactions: 1 open-market purchase ($145K) and 0 open-market sales across all tracked filings.
Where can I see all of Wei Jiang's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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