Lambert Shiu serves as Executive at Penumbra Inc, where they oversee executive responsibilities. Since joining the company, Lambert Shiu has executed 19 insider transactions totaling $0, demonstrating a balanced approach to their equity position. Their most recent transaction on Dec 15, 2025 involved selling 300 shares valued at $92.7K.
Lambert Shiu currently holds 35,285 shares of Penumbra Inc (PEN), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Lambert Shiu has been a net neutral trader of PEN stock. They have purchased $0 and sold $0 worth of shares.
Lambert Shiu's most recent insider trade was on Dec 15, 2025, when they sold 300 shares at $309.15 per share.
Get notified when new Form 4 filings are submitted
| $N/A |
| Discretionary |
| Nov 15, 2025 | PEN | $96.9K | Payment | 346 | $280.07 | Discretionary |
| Nov 15, 2025 | PEN | $141.7K | Payment | 506 | $280.07 | Discretionary |
| Mar 15, 2024 | PEN | $51.5K | Payment | 232 | $222.15 | Discretionary |
| Mar 15, 2024 | PEN | $0 | Award | 1,670 | $N/A | Discretionary |
| Dec 15, 2023 | PEN | $55.7K | Payment | 227 | $245.48 | Discretionary |
| Nov 15, 2023 | PEN | $86.8K | Payment | 381 | $227.88 | Discretionary |
| Oct 9, 2023 | PEN | $34.0K | Option Exercise | 2,750 | $12.36 | Discretionary |
| Dec 15, 2022 | PEN | $0 | Award | 2,230 | $N/A | Discretionary |
| Nov 15, 2022 | PEN | $63.7K | Payment | 325 | $195.99 | Discretionary |
| Oct 15, 2022 | PEN | $62.3K | Payment | 346 | $179.94 | Discretionary |
| May 31, 2022 | PEN | $24.7K | Option Exercise | 2,000 | $12.36 | Discretionary |
| Nov 15, 2021 | PEN | $33.5K | Payment | 130 | $257.47 | Discretionary |
| Nov 15, 2021 | PEN | $0 | Award | 3,750 | $N/A | Discretionary |
| Oct 15, 2021 | PEN | $141.1K | Payment | 527 | $267.75 | Discretionary |
| Nov 15, 2020 | PEN | $52.0K | Payment | 198 | $262.81 | Discretionary |
| Oct 15, 2020 | PEN | $113.5K | Payment | 527 | $215.40 | Discretionary |
| Feb 9, 2020 | PEN | $36.0K | Payment | 204 | $176.35 | Discretionary |