Mark A. Velleca serves as Executive at G1 Therapeutics, Inc., where they oversee executive responsibilities. Since joining the company, Mark A. Velleca has executed 103 insider transactions totaling $8.9M, demonstrating a bearish approach to their equity position. Their most recent transaction on Jan 21, 2026 involved receiving (via award) 600,000 shares valued at $0.
Mark A. Velleca currently holds 600,000 shares of G1 Therapeutics, Inc. (GTHX), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Mark A. Velleca has been a net seller of GTHX stock. They have purchased $0 and sold $8.9M worth of shares.
Mark A. Velleca's most recent insider trade was on Jan 21, 2026, when they sold 600,000 shares at $0.00 per share.
Get notified when new Form 4 filings are submitted
| $3.60 |
| Discretionary |
| Aug 8, 2023 | GTHX | $5.5K | Sale | 2,714 | $2.02 | Planned |
| Aug 8, 2023 | GTHX | $814 | Option Exercise | 2,714 | $0.30 | Planned |
| Aug 8, 2023 | GTHX | $114.6K | Sale | 57,286 | $2.00 | Planned |
| Aug 8, 2023 | GTHX | $22.3K | Option Exercise | 57,286 | $0.39 | Planned |
| Jun 16, 2023 | BDTX | $18.8K | Award | 8,929 | $2.10 | Discretionary |
| Mar 16, 2023 | BDTX | $18.8K | Award | 11,228 | $1.67 | Discretionary |
| Dec 16, 2022 | BDTX | $12.6K | Award | 8,424 | $1.50 | Discretionary |
| Oct 18, 2022 | GTHX | $5.8K | Option Exercise | 15,000 | $0.39 | Discretionary |
| Oct 18, 2022 | GTHX | $175.5K | Sale | 15,000 | $11.70 | Discretionary |
| Sep 20, 2022 | GTHX | $270.0K | Sale | 20,000 | $13.50 | Discretionary |
| Sep 20, 2022 | GTHX | $7.8K | Option Exercise | 20,000 | $0.39 | Discretionary |
| Sep 16, 2022 | BDTX | $11.3K | Award | 4,294 | $2.62 | Discretionary |
| Aug 16, 2022 | GTHX | $31.2K | Option Exercise | 80,000 | $0.39 | Discretionary |
| Aug 16, 2022 | GTHX | $1.0M | Sale | 80,000 | $12.64 | Discretionary |
| Jun 17, 2022 | BDTX | $11.3K | Award | 5,542 | $2.03 | Discretionary |
| Mar 18, 2022 | BDTX | $8.7K | Award | 2,897 | $3.02 | Discretionary |
| Feb 7, 2022 | GTHX | $5.8K | Option Exercise | 15,000 | $0.39 | Discretionary |
| Nov 9, 2021 | GTHX | $15.6K | Option Exercise | 40,000 | $0.39 | Discretionary |
| Jul 15, 2021 | GTHX | $3.9K | Option Exercise | 10,000 | $0.39 | Discretionary |
| Jul 15, 2021 | GTHX | $184.9K | Sale | 10,000 | $18.49 | Discretionary |
| Jul 14, 2021 | GTHX | $3.9K | Option Exercise | 10,000 | $0.39 | Discretionary |
| Jul 14, 2021 | GTHX | $190.8K | Sale | 10,000 | $19.08 | Discretionary |
| Jul 13, 2021 | GTHX | $3.9K | Option Exercise | 10,000 | $0.39 | Discretionary |
| Jul 13, 2021 | GTHX | $194.5K | Sale | 10,000 | $19.45 | Discretionary |
| Jun 17, 2021 | GTHX | $3.9K | Option Exercise | 10,000 | $0.39 | Discretionary |
| Jun 17, 2021 | GTHX | $217.7K | Sale | 10,000 | $21.77 | Discretionary |
| Jun 16, 2021 | GTHX | $217.4K | Sale | 10,000 | $21.74 | Discretionary |
| Jun 16, 2021 | GTHX | $3.9K | Option Exercise | 10,000 | $0.39 | Discretionary |