Lambert Shiu

Companies

• PenumbraChief Accounting Officer Dec 11, 2019 to now¹

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• PPenumbra PEN39,623 shares²$12.7M at $321.20Mar 17, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Mar 15, 2026Shares withheld for tax 150 shares at $336.18 of Penumbra²
• Feb 17, 2026Granted 2,300 shares of Penumbra³
• Feb 15, 2026Shares withheld for tax 412 shares at $339.30 of Penumbra³
• Feb 13, 2026Granted 2,300 shares of Penumbra³
• Dec 15, 2025Shares withheld for tax 300 shares at $309.15 of Penumbra⁴
• Nov 17, 2025Granted 3,580 shares of Penumbra⁵
• Nov 15, 2025Shares withheld for tax 506 shares at $280.07 of Penumbra⁵
• Nov 15, 2025Shares withheld for tax 346 shares at $280.07 of Penumbra⁵
• Mar 15, 2025Shares withheld for tax 213 shares at $272.62 of Penumbra⁶
• Mar 4, 2025Sold 501 shares at $282.88 of Penumbra⁷
• Mar 4, 2025Exercised options 9,200 shares at $22.04 of Penumbra⁷
• Mar 3, 2025Sold 26 shares at $289.76 of Penumbra⁷
• Mar 3, 2025Sold 956 shares at $288.88 of Penumbra⁷
• Mar 3, 2025Sold 348 shares at $288.57 of Penumbra⁷
• Mar 3, 2025Sold 2,850 shares at $286.28 of Penumbra⁷
• Mar 3, 2025Sold 1,672 shares at $285.16 of Penumbra⁷
• Mar 3, 2025Sold 550 shares at $283.96 of Penumbra⁷
• Mar 3, 2025Sold 886 shares at $283.15 of Penumbra⁷
• Feb 18, 2025Shares withheld for tax 95 shares at $271.14 of Penumbra⁸
• Feb 18, 2025Granted 1,510 shares of Penumbra⁸
• Feb 14, 2025Granted 640 shares of Penumbra⁸
• Feb 14, 2025Exercised options 4,525 shares at $22.04 of Penumbra⁸
• Dec 15, 2024Shares withheld for tax 300 shares at $245.55 of Penumbra⁹
• Dec 3, 2024Exercised options 5,250 shares at $12.36 of Penumbra¹⁰
• Dec 2, 2024Sold 654 shares at $243.01 of Penumbra¹⁰