Yuen Maggie, Chief Financial Officer, sold Penumbra Inc ($PEN) shares on the open market three times in the last year for a total of $1.93 million, with her most recent sale on March 2, 2026. These sales rank 3,576th among 11,678 insiders in our database, where the average is $8.6 million across 6.37 transactions. She also sold AtriCure Inc ($ATRC) shares once for $107,160 on November 21, 2025, ranking 9,465th. Maggie made no open market purchases in the past year.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 15, 2026 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | F | Common Stock | 186 | $336.18 | 18,167.0000 | 39,302,239 | 1.01% | 0.00% |
| March 2, 2026 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | S | Common Stock | 2432 | $342.30 | 18,353.0000 | 39,302,239 | 11.70% | 0.01% |
| Feb. 17, 2026 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | A | Common Stock | 2630 | $0.00 | 20,785.0000 | 39,302,239 | 14.49% | 0.01% |
| Feb. 15, 2026 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | F | Common Stock | 481 | $339.30 | 18,155.0000 | 39,302,239 | 2.58% | 0.00% |
| Feb. 13, 2026 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | A | Common Stock | 2630 | $0.00 | 18,636.0000 | 39,302,239 | 16.43% | 0.01% |
| Dec. 15, 2025 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | F | Common Stock | 565 | $309.15 | 16,006.0000 | 39,302,239 | 3.41% | 0.00% |
| Nov. 21, 2025 | AtriCure, Inc. | $ATRC | Yuen Maggie | Director | S | Common Stock | 3000 | $35.72 | 11,371.0000 | 49,716,988 | 20.88% | 0.01% |
| Nov. 17, 2025 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | A | Common Stock | 3580 | $0.00 | 16,556.0000 | 39,302,239 | 27.59% | 0.01% |
| Nov. 15, 2025 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | F | Common Stock | 364 | $280.07 | 13,303.0000 | 39,302,239 | 2.66% | 0.00% |
| Nov. 15, 2025 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | F | Common Stock | 327 | $280.07 | 12,976.0000 | 39,302,239 | 2.46% | 0.00% |
| Aug. 15, 2025 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | M | Common Stock | 724 | $158.30 | 13,667.0000 | 39,268,037 | 5.59% | 0.00% |
| Aug. 15, 2025 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | M | Stock Option (right to buy) | 724 | $0.00 | 5,376.0000 | 39,268,037 | 11.87% | 0.00% |
| Aug. 13, 2025 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | S | Common Stock | 2000 | $250.00 | 12,943.0000 | 39,268,037 | 13.38% | 0.01% |
| May 19, 2025 | AtriCure, Inc. | $ATRC | Yuen Maggie | Director | A | Common Stock | 5401 | $0.00 | 14,371.0000 | 48,879,604 | 60.21% | 0.01% |
| May 2, 2025 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | S | Common Stock | 2000 | $299.01 | 13,957.0000 | 39,268,037 | 12.53% | 0.01% |
| May 6, 2025 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | M | Common Stock | 900 | $158.30 | 14,857.0000 | 39,268,037 | 6.45% | 0.00% |
| May 6, 2025 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | M | Stock Option (right to buy) | 900 | $0.00 | 6,100.0000 | 39,268,037 | 12.86% | 0.00% |
| March 15, 2025 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | F | Common Stock | 186 | $272.62 | 15,957.0000 | 39,268,037 | 1.15% | 0.00% |
| March 3, 2025 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | S | Common Stock | 360 | $288.74 | 15,243.0000 | 39,268,037 | 2.31% | 0.00% |
| March 5, 2025 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | M | Stock Option (right to buy) | 900 | $0.00 | 7,000.0000 | 39,268,037 | 11.39% | 0.00% |
| March 3, 2025 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | S | Common Stock | 500 | $286.43 | 15,603.0000 | 39,268,037 | 3.11% | 0.00% |
| March 3, 2025 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | S | Common Stock | 590 | $285.70 | 16,103.0000 | 39,268,037 | 3.53% | 0.00% |
| March 3, 2025 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | S | Common Stock | 300 | $284.86 | 16,693.0000 | 39,268,037 | 1.77% | 0.00% |
| March 3, 2025 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | S | Common Stock | 250 | $283.25 | 16,993.0000 | 39,268,037 | 1.45% | 0.00% |
| March 5, 2025 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | M | Common Stock | 900 | $158.30 | 16,143.0000 | 39,268,037 | 5.90% | 0.00% |
| Feb. 18, 2025 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | A | Common Stock | 1840 | $0.00 | 17,324.0000 | 39,268,037 | 11.88% | 0.00% |
| Feb. 18, 2025 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | F | Common Stock | 81 | $271.14 | 17,243.0000 | 39,268,037 | 0.47% | 0.00% |
| Feb. 14, 2025 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | A | Common Stock | 780 | $0.00 | 15,484.0000 | 39,268,037 | 5.30% | 0.00% |
| Dec. 15, 2024 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | F | Common Stock | 599 | $245.55 | 14,704.0000 | 39,178,227 | 3.91% | 0.00% |
| Nov. 15, 2024 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | F | Common Stock | 504 | $237.84 | 15,296.0000 | 39,178,227 | 3.19% | 0.00% |
| Nov. 15, 2024 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | A | Common Stock | 2570 | $0.00 | 15,800.0000 | 39,178,227 | 19.43% | 0.01% |
| Aug. 15, 2024 | AtriCure, Inc. | $ATRC | Yuen Maggie | Director | S | Common Stock | 3500 | $24.07 | 8,970.0000 | 0 | 28.07% | 0.00% |
| May 13, 2024 | AtriCure, Inc. | $ATRC | Yuen Maggie | Director | A | Common Stock | 7788 | $0.00 | 12,470.0000 | 0 | 166.34% | 0.00% |
| March 15, 2024 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | A | Common Stock | 2070 | $0.00 | 13,322.0000 | 39,216,564 | 18.40% | 0.01% |
| March 15, 2024 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | F | Common Stock | 193 | $222.15 | 13,129.0000 | 39,216,564 | 1.45% | 0.00% |
| Dec. 15, 2023 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | F | Common Stock | 385 | $245.48 | 11,854.0000 | 37,841,874 | 3.15% | 0.00% |
| Dec. 16, 2023 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | F | Common Stock | 602 | $245.48 | 11,252.0000 | 37,841,874 | 5.08% | 0.00% |
| Nov. 15, 2023 | Penumbra Inc | $PEN | Yuen Maggie | Chief Financial Officer | F | Common Stock | 466 | $227.88 | 12,221.0000 | 37,841,874 | 3.67% | 0.00% |
| May 26, 2023 | AtriCure, Inc. | $ATRC | Yuen Maggie | Director | S | Common Stock | 4313 | $47.04 | 4,682.0000 | 0 | 47.95% | 0.00% |
| May 25, 2023 | AtriCure, Inc. | $ATRC | Yuen Maggie | Director | A | Common Stock | 3186 | $0.00 | 8,995.0000 | 0 | 54.85% | 0.00% |