Young Teresa L. sold Seres Therapeutics ($MCRB) shares on the open market four times over the past year, totaling about $20,100. Her most recent sale occurred on February 15, 2026. These sales rank her 11,034th among 11,678 individual insiders, well below the average sale value of $8.6 million across 6.4 transactions. She made no open market purchases in this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb. 15, 2026 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Common Stock | 231 | $0.00 | 8,632.0000 | 9,046,519 | 2.75% | 0.00% |
| Feb. 15, 2026 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | S | Common Stock | 75 | $8.47 | 8,557.0000 | 9,046,519 | 0.87% | 0.00% |
| Feb. 15, 2026 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Restricted Stock Units | 133 | $0.00 | 531.0000 | 9,046,519 | 20.03% | 0.00% |
| Feb. 15, 2026 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Restricted Stock Units | 98 | $0.00 | 780.0000 | 9,046,519 | 11.16% | 0.00% |
| Nov. 15, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | S | Common Stock | 1042 | $17.30 | 8,401.0000 | 9,046,519 | 11.03% | 0.01% |
| Nov. 15, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Common Stock | 98 | $0.00 | 9,443.0000 | 9,046,519 | 1.05% | 0.00% |
| Nov. 15, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Common Stock | 132 | $0.00 | 9,345.0000 | 9,046,519 | 1.43% | 0.00% |
| Nov. 15, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Common Stock | 3998 | $0.00 | 9,213.0000 | 9,046,519 | 76.66% | 0.04% |
| Nov. 15, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Restricted Stock Units | 98 | $0.00 | 878.0000 | 9,046,519 | 10.04% | 0.00% |
| Nov. 15, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Restricted Stock Units | 132 | $0.00 | 664.0000 | 9,046,519 | 16.58% | 0.00% |
| Nov. 15, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Restricted Stock Units | 3998 | $0.00 | 0.0000 | 9,046,519 | 100.00% | 0.04% |
| Sept. 26, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | A | Restricted Stock Units | 3998 | $0.00 | 3,998.0000 | 174,358,753 | 9999.99% | 0.00% |
| Aug. 18, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | S | Common Stock | 59 | $16.65 | 5,215.0000 | 174,358,753 | 1.12% | 0.00% |
| Aug. 15, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Common Stock | 97 | $0.00 | 5,274.0000 | 174,358,753 | 1.87% | 0.00% |
| Aug. 15, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Restricted Stock Units | 133 | $0.00 | 796.0000 | 174,358,753 | 14.32% | 0.00% |
| Aug. 15, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Restricted Stock Units | 97 | $0.00 | 976.0000 | 174,358,753 | 9.04% | 0.00% |
| Aug. 15, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Common Stock | 133 | $0.00 | 5,177.0000 | 174,358,753 | 2.64% | 0.00% |
| May 16, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | S | Common Stock | 63 | $7.28 | 5,044.0000 | 174,358,753 | 1.23% | 0.00% |
| May 15, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Common Stock | 133 | $0.00 | 5,009.0000 | 174,358,753 | 2.73% | 0.00% |
| May 15, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Common Stock | 98 | $0.00 | 5,107.0000 | 174,358,753 | 1.96% | 0.00% |
| May 15, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Restricted Stock Units | 133 | $0.00 | 929.0000 | 174,358,753 | 12.52% | 0.00% |
| May 15, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Restricted Stock Units | 98 | $0.00 | 1,073.0000 | 174,358,753 | 8.37% | 0.00% |
| Feb. 15, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Common Stock | 2657 | $0.00 | 93,061.0000 | 0 | 2.94% | 0.00% |
| Feb. 15, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Common Stock | 7813 | $0.00 | 100,874.0000 | 0 | 8.40% | 0.00% |
| Feb. 18, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | S | Common Stock | 3338 | $0.81 | 97,536.0000 | 0 | 3.31% | 0.00% |
| Feb. 15, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Restricted Stock Units | 2657 | $0.00 | 21,250.0000 | 0 | 11.11% | 0.00% |
| Feb. 15, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Restricted Stock Units | 7813 | $0.00 | 23,437.0000 | 0 | 25.00% | 0.00% |
| Feb. 7, 2025 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | A | Stock Option (Right to Buy) | 650000 | $0.00 | 650,000.0000 | 0 | 9999.99% | 0.00% |
| Nov. 18, 2024 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | S | Common Stock | 735 | $0.54 | 90,404.0000 | 0 | 0.81% | 0.00% |
| Nov. 15, 2024 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Common Stock | 2656 | $0.00 | 91,139.0000 | 0 | 3.00% | 0.00% |
| Nov. 15, 2024 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Restricted Stock Units | 2656 | $0.00 | 23,907.0000 | 0 | 10.00% | 0.00% |
| Oct. 27, 2024 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Common Stock | 11360 | $0.00 | 91,466.0000 | 0 | 14.18% | 0.00% |
| Oct. 27, 2024 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Restricted Stock Units | 11360 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Oct. 28, 2024 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | S | Common Stock | 2983 | $0.69 | 88,483.0000 | 0 | 3.26% | 0.00% |
| Aug. 15, 2024 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Restricted Stock Units | 2656 | $0.00 | 26,563.0000 | 0 | 9.09% | 0.00% |
| Aug. 16, 2024 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | S | Common Stock | 728 | $0.84 | 80,106.0000 | 0 | 0.90% | 0.00% |
| Aug. 15, 2024 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Common Stock | 2656 | $0.00 | 80,834.0000 | 0 | 3.40% | 0.00% |
| Aug. 3, 2024 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Restricted Stock Units | 85000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 3, 2024 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Common Stock | 85000 | $0.00 | 102,658.0000 | 0 | 481.37% | 0.00% |
| Aug. 5, 2024 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | S | Common Stock | 24480 | $1.08 | 78,178.0000 | 0 | 23.85% | 0.00% |
| May 15, 2024 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | S | Common Stock | 703 | $0.94 | 17,658.0000 | 0 | 3.83% | 0.00% |
| May 15, 2024 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Restricted Stock Units | 2656 | $0.00 | 29,219.0000 | 0 | 8.33% | 0.00% |
| May 15, 2024 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Common Stock | 2656 | $0.00 | 18,361.0000 | 0 | 16.91% | 0.00% |
| Feb. 14, 2024 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | A | Stock Option (Right to Buy) | 287905 | $0.00 | 287,905.0000 | 0 | 9999.99% | 0.00% |
| Feb. 14, 2024 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | A | Restricted Stock Units | 31250 | $0.00 | 31,250.0000 | 0 | 9999.99% | 0.00% |
| Feb. 15, 2024 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Restricted Stock Units | 10625 | $0.00 | 31,875.0000 | 0 | 25.00% | 0.00% |
| Feb. 15, 2024 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Common Stock | 10625 | $0.00 | 19,079.0000 | 0 | 125.68% | 0.00% |
| Feb. 16, 2024 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | S | Common Stock | 3374 | $1.08 | 15,705.0000 | 0 | 17.68% | 0.00% |
| Feb. 14, 2024 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | A | Stock Option (Right to Buy) | 187500 | $0.00 | 187,500.0000 | 0 | 9999.99% | 0.00% |
| Oct. 30, 2023 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | S | Common Stock | 2907 | $1.35 | 8,454.0000 | 0 | 25.59% | 0.00% |
| Oct. 27, 2023 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Common Stock | 11361 | $0.00 | 11,361.0000 | 0 | 9999.99% | 0.00% |
| April 27, 2023 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | A | Restricted Stock Units | 22721 | $0.00 | 22,721.0000 | 0 | 9999.99% | 0.00% |
| Oct. 27, 2023 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | M | Restricted Stock Units | 11361 | $0.00 | 11,360.0000 | 0 | 50.00% | 0.00% |
| Feb. 3, 2023 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | A | Restricted Stock Units | 85000 | $0.00 | 85,000.0000 | 0 | 9999.99% | 0.00% |
| Feb. 3, 2023 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | A | Stock Option (Right to Buy) | 85000 | $0.00 | 85,000.0000 | 0 | 9999.99% | 0.00% |
| Feb. 3, 2023 | Seres Therapeutics, Inc. | $MCRB | Young Teresa L. | See Remarks | A | Restricted Stock Units | 42500 | $0.00 | 42,500.0000 | 0 | 9999.99% | 0.00% |