Myrtle S. Potter, a director at Guardant Health ($GH), made six open market sales of company shares over the past year, totaling about $138,000. Her most recent sale occurred on October 17, 2025. These transactions rank her 9,115th among 11,678 insiders in our database by sale value, well below the average of $8.6 million per seller and 6.4 transactions. She reported no open market purchases during this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct. 17, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | S | Common Stock | 26 | $66.95 | 18,324.0000 | 123,421,441 | 0.14% | 0.00% |
| Oct. 15, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Restricted Stock Units | 69 | $0.00 | 0.0000 | 123,421,441 | 100.00% | 0.00% |
| Oct. 15, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Common Stock | 69 | $0.00 | 18,350.0000 | 123,421,441 | 0.38% | 0.00% |
| Sept. 15, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Common Stock | 68 | $0.00 | 18,307.0000 | 123,421,441 | 0.37% | 0.00% |
| Sept. 15, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Restricted Stock Units | 68 | $0.00 | 69.0000 | 123,421,441 | 49.64% | 0.00% |
| Sept. 17, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | S | Common Stock | 26 | $55.63 | 18,281.0000 | 123,421,441 | 0.14% | 0.00% |
| Aug. 19, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | S | Common Stock | 26 | $59.02 | 18,239.0000 | 123,421,441 | 0.14% | 0.00% |
| Aug. 15, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Common Stock | 69 | $0.00 | 18,265.0000 | 123,421,441 | 0.38% | 0.00% |
| Aug. 15, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Restricted Stock Units | 69 | $0.00 | 137.0000 | 123,421,441 | 33.50% | 0.00% |
| July 17, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | S | Common Stock | 26 | $48.20 | 18,196.0000 | 123,421,441 | 0.14% | 0.00% |
| July 15, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Common Stock | 68 | $0.00 | 18,222.0000 | 123,421,441 | 0.37% | 0.00% |
| July 15, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Restricted Stock Units | 68 | $0.00 | 206.0000 | 123,421,441 | 24.82% | 0.00% |
| June 18, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | A | Stock Option (Right to Buy) | 6833 | $0.00 | 6,833.0000 | 123,421,441 | 9999.99% | 0.01% |
| June 18, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | A | Restricted Stock Units | 4203 | $0.00 | 4,203.0000 | 123,421,441 | 9999.99% | 0.00% |
| June 18, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | S | Common Stock | 26 | $49.47 | 18,154.0000 | 123,421,441 | 0.14% | 0.00% |
| June 15, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Restricted Stock Units | 69 | $0.00 | 274.0000 | 123,421,441 | 20.12% | 0.00% |
| June 12, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Restricted Stock Units | 6674 | $0.00 | 0.0000 | 123,421,441 | 100.00% | 0.01% |
| June 16, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | S | Common Stock | 2626 | $49.70 | 18,180.0000 | 123,421,441 | 12.62% | 0.00% |
| June 15, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Common Stock | 69 | $0.00 | 20,806.0000 | 123,421,441 | 0.33% | 0.00% |
| June 12, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Common Stock | 6674 | $0.00 | 20,737.0000 | 123,421,441 | 47.46% | 0.01% |
| June 11, 2025 | Ginkgo Bioworks Holdings, Inc. | $DNA | POTTER MYRTLE S | Director | M | Restricted Stock Units | 10822 | $0.00 | 0.0000 | 54,365,785 | 100.00% | 0.02% |
| June 11, 2025 | Ginkgo Bioworks Holdings, Inc. | $DNA | POTTER MYRTLE S | Director | M | Class A Common Stock | 10822 | $0.00 | 10,822.0000 | 54,365,785 | 9999.99% | 0.02% |
| May 15, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Common Stock | 68 | $0.00 | 14,063.0000 | 123,421,441 | 0.49% | 0.00% |
| May 15, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Restricted Stock Units | 68 | $0.00 | 343.0000 | 123,421,441 | 16.55% | 0.00% |
| April 15, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Common Stock | 68 | $0.00 | 13,995.0000 | 123,421,441 | 0.49% | 0.00% |
| April 15, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Restricted Stock Units | 68 | $0.00 | 411.0000 | 123,421,441 | 14.20% | 0.00% |
| March 15, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Restricted Stock Units | 69 | $0.00 | 479.0000 | 123,421,441 | 12.59% | 0.00% |
| March 15, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Common Stock | 69 | $0.00 | 13,927.0000 | 123,421,441 | 0.50% | 0.00% |
| Feb. 15, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Restricted Stock Units | 68 | $0.00 | 548.0000 | 123,421,441 | 11.04% | 0.00% |
| Feb. 15, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Common Stock | 68 | $0.00 | 13,858.0000 | 123,421,441 | 0.49% | 0.00% |
| Jan. 15, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Common Stock | 68 | $0.00 | 13,790.0000 | 0 | 0.50% | 0.00% |
| Jan. 15, 2025 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Restricted Stock Units | 68 | $0.00 | 616.0000 | 0 | 9.94% | 0.00% |
| Dec. 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Restricted Stock Units | 69 | $0.00 | 684.0000 | 0 | 9.16% | 0.00% |
| Dec. 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Common Stock | 69 | $0.00 | 13,722.0000 | 0 | 0.51% | 0.00% |
| Nov. 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Common Stock | 68 | $0.00 | 13,653.0000 | 0 | 0.50% | 0.00% |
| Nov. 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Restricted Stock Units | 68 | $0.00 | 753.0000 | 0 | 8.28% | 0.00% |
| Oct. 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Common Stock | 69 | $0.00 | 13,585.0000 | 0 | 0.51% | 0.00% |
| Oct. 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Restricted Stock Units | 69 | $0.00 | 821.0000 | 0 | 7.75% | 0.00% |
| Sept. 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Restricted Stock Units | 68 | $0.00 | 890.0000 | 0 | 7.10% | 0.00% |
| Sept. 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Common Stock | 68 | $0.00 | 13,516.0000 | 0 | 0.51% | 0.00% |
| Aug. 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Common Stock | 68 | $0.00 | 13,448.0000 | 0 | 0.51% | 0.00% |
| Aug. 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Restricted Stock Units | 68 | $0.00 | 958.0000 | 0 | 6.63% | 0.00% |
| July 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Common Stock | 69 | $0.00 | 13,380.0000 | 0 | 0.52% | 0.00% |
| July 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Restricted Stock Units | 69 | $0.00 | 1,026.0000 | 0 | 6.30% | 0.00% |
| June 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Common Stock | 68 | $0.00 | 13,311.0000 | 0 | 0.51% | 0.00% |
| June 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Restricted Stock Units | 68 | $0.00 | 1,095.0000 | 0 | 5.85% | 0.00% |
| June 13, 2024 | Ginkgo Bioworks Holdings, Inc. | $DNA | POTTER MYRTLE S | Director | A | Restricted Stock Units | 432900 | $0.00 | 432,900.0000 | 50,032,873 | 9999.99% | 0.87% |
| June 13, 2024 | Ginkgo Bioworks Holdings, Inc. | $DNA | POTTER MYRTLE S | Director | A | Stock Option | 1111111 | $0.00 | 1,111,111.0000 | 50,032,873 | 9999.99% | 2.22% |
| June 13, 2024 | Ginkgo Bioworks Holdings, Inc. | $DNA | POTTER MYRTLE S | Director | A | Stock Option | 571428 | $0.00 | 571,428.0000 | 50,032,873 | 9999.99% | 1.14% |
| June 12, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | A | Stock Option (Right to Buy) | 10703 | $0.00 | 10,703.0000 | 0 | 9999.99% | 0.00% |
| June 12, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | A | Restricted Stock Units | 6674 | $0.00 | 6,674.0000 | 0 | 9999.99% | 0.00% |
| June 12, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Restricted Stock Units | 5592 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| June 12, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Common Stock | 5592 | $0.00 | 13,243.0000 | 0 | 73.09% | 0.00% |
| May 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Common Stock | 69 | $0.00 | 7,651.0000 | 0 | 0.91% | 0.00% |
| May 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Restricted Stock Units | 69 | $0.00 | 1,163.0000 | 0 | 5.60% | 0.00% |
| April 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Restricted Stock Units | 68 | $0.00 | 1,232.0000 | 0 | 5.23% | 0.00% |
| April 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Common Stock | 68 | $0.00 | 7,582.0000 | 0 | 0.90% | 0.00% |
| March 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Restricted Stock Units | 68 | $0.00 | 1,300.0000 | 0 | 4.97% | 0.00% |
| March 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Common Stock | 68 | $0.00 | 7,514.0000 | 0 | 0.91% | 0.00% |
| Feb. 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Restricted Stock Units | 69 | $0.00 | 1,368.0000 | 0 | 4.80% | 0.00% |
| Feb. 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | Common Stock | 69 | $0.00 | 7,446.0000 | 0 | 0.94% | 0.00% |
| Jan. 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | RESTRICTED STOCK UNITS | 68 | $0.00 | 1,437.0000 | 0 | 4.52% | 0.00% |
| Jan. 15, 2024 | Guardant Health, Inc. | $GH | POTTER MYRTLE S | Director | M | COMMON STOCK | 68 | $0.00 | 7,377.0000 | 0 | 0.93% | 0.00% |