Gregory L. Summe, a director at Avantor, Inc. ($AVTR), made seven open market purchases of company shares over the last year, totaling $4.56 million. His most recent buy occurred on February 12, 2026. These purchases rank 188th among nearly 5,000 individual insiders in our database, surpassing the average of $1.46 million and 3.3 transactions per buyer. Summe reported no open market sales 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb. 12, 2026 | Avantor, Inc. | $AVTR | SUMME GREGORY L | Director | P | Common Stock | 100000 | $9.40 | 458,111.0000 | 680,600,000 | 27.92% | 0.01% |
| Jan. 15, 2026 | GRAIL, Inc. | $GRAL | SUMME GREGORY L | Director | A | Common Stock | 329 | $97.44 | 39,123.0000 | 36,160,998,000 | 0.85% | 0.00% |
| Oct. 30, 2025 | Avantor, Inc. | $AVTR | SUMME GREGORY L | Director | P | Common Stock | 100000 | $11.25 | 358,111.0000 | 681,700,000 | 38.74% | 0.01% |
| Oct. 15, 2025 | GRAIL, Inc. | $GRAL | SUMME GREGORY L | Director | A | Common Stock | 425 | $75.52 | 38,794.0000 | 36,160,998,000 | 1.11% | 0.00% |
| Aug. 21, 2025 | Avantor, Inc. | $AVTR | SUMME GREGORY L | Director | P | Common Stock | 100000 | $12.56 | 258,111.0000 | 681,900,000 | 63.25% | 0.01% |
| July 15, 2025 | GRAIL, Inc. | $GRAL | SUMME GREGORY L | Director | A | Common Stock | 825 | $38.53 | 38,369.0000 | 36,047,799,000 | 2.20% | 0.00% |
| June 11, 2025 | NXP Semiconductors N.V. | $NXPI | SUMME GREGORY L | Director | A | Restricted Stock Unit | 1035 | $0.00 | 1,035.0000 | 257,848,000 | 9999.99% | 0.00% |
| June 10, 2025 | Wheels Up Experience Inc. | $UP | SUMME GREGORY L | Director | A | Class A Common Stock, par value $0.0001 per share | 148026 | $0.00 | 235,714.0000 | 698,792,071 | 168.81% | 0.02% |
| May 29, 2025 | NXP Semiconductors N.V. | $NXPI | SUMME GREGORY L | Director | M | Common Stock | 822 | $0.00 | 8,529.8960 | 257,848,000 | 10.66% | 0.00% |
| May 29, 2025 | NXP Semiconductors N.V. | $NXPI | SUMME GREGORY L | Director | F | Common Stock | 407 | $196.21 | 8,122.8960 | 257,848,000 | 4.77% | 0.00% |
| May 29, 2025 | NXP Semiconductors N.V. | $NXPI | SUMME GREGORY L | Director | M | Restricted Stock Unit | 822 | $0.00 | 0.0000 | 257,848,000 | 100.00% | 0.00% |
| May 29, 2025 | GRAIL, Inc. | $GRAL | SUMME GREGORY L | Director | A | Common Stock | 6082 | $41.10 | 37,544.0000 | 35,296,858,000 | 19.33% | 0.00% |
| May 23, 2025 | Avantor, Inc. | $AVTR | SUMME GREGORY L | Director | P | Common Stock | 30000 | $12.50 | 158,111.0000 | 681,900,000 | 23.42% | 0.00% |
| May 22, 2025 | Avantor, Inc. | $AVTR | SUMME GREGORY L | Director | P | Common Stock | 20000 | $12.65 | 128,111.0000 | 681,900,000 | 18.50% | 0.00% |
| May 8, 2025 | Avantor, Inc. | $AVTR | SUMME GREGORY L | Director | A | Common Stock | 17100 | $0.00 | 58,111.0000 | 681,900,000 | 41.70% | 0.00% |
| May 7, 2025 | Avantor, Inc. | $AVTR | SUMME GREGORY L | Director | P | Common Stock | 25000 | $12.00 | 50,000.0000 | 681,900,000 | 100.00% | 0.00% |
| April 28, 2025 | Avantor, Inc. | $AVTR | SUMME GREGORY L | Director | P | Common Stock | 25000 | $12.50 | 66,011.0000 | 681,900,000 | 60.96% | 0.00% |
| April 15, 2025 | GRAIL, Inc. | $GRAL | SUMME GREGORY L | Director | A | Common Stock | 1212 | $25.94 | 31,462.0000 | 35,296,858,000 | 4.01% | 0.00% |
| Feb. 18, 2025 | STATE STREET CORP | $STT | SUMME GREGORY L | Director | S | Common Stock | 10815 | $100.00 | 100,023.0000 | 302,226,000 | 9.76% | 0.00% |
| Feb. 18, 2025 | STATE STREET CORP | $STT | SUMME GREGORY L | Director | S | Common Stock | 3000 | $100.00 | 100,023.0000 | 302,226,000 | 2.91% | 0.00% |
| Jan. 15, 2025 | GRAIL, Inc. | $GRAL | SUMME GREGORY L | Director | A | Common Stock | 1828 | $17.58 | 30,250.0000 | 33,893,409,000 | 6.43% | 0.00% |
| Oct. 30, 2024 | GRAIL, Inc. | $GRAL | SUMME GREGORY L | Director | A | Common Stock | 296 | $13.62 | 28,422.0000 | 33,203,744,000 | 1.05% | 0.00% |
| Oct. 15, 2024 | GRAIL, Inc. | $GRAL | SUMME GREGORY L | Director | A | Common Stock | 1656 | $14.01 | 28,126.0000 | 33,203,744,000 | 6.26% | 0.00% |
| Sept. 11, 2024 | Wheels Up Experience Inc. | $UP | SUMME GREGORY L | Director | A | Class A Common Stock, par value $0.0001 per share | 87688 | $0.00 | 87,688.0000 | 0 | 9999.99% | 0.00% |
| June 25, 2024 | GRAIL, Inc. | $GRAL | SUMME GREGORY L | Director | A | Common Stock | 26470 | $0.00 | 26,470.0000 | 0 | 9999.99% | 0.00% |
| May 29, 2024 | NXP Semiconductors N.V. | $NXPI | SUMME GREGORY L | Director | F | Common Stock | 600 | $279.63 | 7,707.8960 | 261,370,000 | 7.22% | 0.00% |
| May 29, 2024 | NXP Semiconductors N.V. | $NXPI | SUMME GREGORY L | Director | M | Common Stock | 1211 | $0.00 | 8,307.8960 | 261,370,000 | 17.06% | 0.00% |
| May 29, 2024 | NXP Semiconductors N.V. | $NXPI | SUMME GREGORY L | Director | A | Restricted Stock Unit | 822 | $0.00 | 822.0000 | 261,370,000 | 9999.99% | 0.00% |
| May 29, 2024 | NXP Semiconductors N.V. | $NXPI | SUMME GREGORY L | Director | M | Restricted Stock Unit | 1211 | $0.00 | 0.0000 | 261,370,000 | 100.00% | 0.00% |
| May 15, 2024 | STATE STREET CORP | $STT | SUMME GREGORY L | Director | A | Common Stock | 2514 | $0.00 | 111,328.0000 | 326,568,000 | 2.31% | 0.00% |
| May 9, 2024 | Avantor, Inc. | $AVTR | SUMME GREGORY L | Director | A | Common Stock | 8477 | $0.00 | 41,011.0000 | 678,400,000 | 26.06% | 0.00% |
| Feb. 28, 2024 | NXP Semiconductors N.V. | $NXPI | SUMME GREGORY L | Director | S | Common Stock | 3000 | $245.27 | 7,096.8960 | 261,370,000 | 29.71% | 0.00% |
| Feb. 28, 2024 | NXP Semiconductors N.V. | $NXPI | SUMME GREGORY L | Director | S | Common Stock | 4695 | $245.27 | 7,096.8960 | 261,370,000 | 39.82% | 0.00% |
| Nov. 7, 2023 | NXP Semiconductors N.V. | $NXPI | SUMME GREGORY L | Director | A | Restricted Stock Unit | 1211 | $0.00 | 1,211.0000 | 264,053,000 | 9999.99% | 0.00% |
| May 24, 2023 | NXP Semiconductors N.V. | $NXPI | SUMME GREGORY L | Director | M | Restricted Stock Unit | 1482 | $0.00 | 0.0000 | 264,053,000 | 100.00% | 0.00% |
| May 24, 2023 | NXP Semiconductors N.V. | $NXPI | SUMME GREGORY L | Director | M | Common Stock | 1482 | $0.00 | 15,525.8960 | 264,053,000 | 10.55% | 0.00% |
| May 24, 2023 | NXP Semiconductors N.V. | $NXPI | SUMME GREGORY L | Director | F | Common Stock | 734 | $175.06 | 14,791.8960 | 264,053,000 | 4.73% | 0.00% |