Lambert Shiu
Chief Accounting Officer · Penumbra Inc
- 2024
- Mar 17, 2026
- 6
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies Lambert Shiu 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.
- Arani Bose - $4.43M in PEN purchases and sales in the last 12 months
- Johanna Roberts - $877K in PEN purchases and sales in the last 12 months
- Maggie Yuen - $832K in PEN purchases and sales in the last 12 months
- Harpreet Grewal - $104K in PEN purchases and sales in the last 12 months
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Frequently asked questions
Who is Lambert Shiu?
Lambert Shiu is a corporate insider, tracked as Chief Accounting Officer of Penumbra Inc (PEN). InsiderAlpha holds 6 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Lambert Shiu last file a Form 4?
The most recent primary Form 4 on record is dated 17 March 2026, one of 6 filings going back to 2024.
Has Lambert Shiu been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($595K) across all tracked filings.
