Mark Partin serves as Executive at BLACKLINE, INC., where they oversee executive responsibilities. Since joining the company, Mark Partin has executed 176 insider transactions totaling $35.0M, demonstrating a bearish approach to their equity position. Their most recent transaction on Nov 6, 2025 involved receiving (via award) 2,485 shares valued at $0.
Mark Partin currently holds 2,485 shares of BLACKLINE, INC. (BL), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Mark Partin has been a net seller of BL stock. They have purchased $0 and sold $35.0M worth of shares.
Mark Partin's most recent insider trade was on Nov 6, 2025, when they sold 2,485 shares at $0.00 per share.
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| $14.00 |
| Planned |
| Sep 27, 2024 | BL | $138.6K | Sale | 2,615 | $53.00 | Planned |
| Sep 27, 2024 | BL | $160.7K | Sale | 3,033 | $53.00 | Planned |
| Sep 27, 2024 | BL | $36.6K | Option Exercise | 2,615 | $14.00 | Planned |
| Aug 20, 2024 | BL | $18.4K | Payment | 356 | $51.59 | Discretionary |
| Aug 20, 2024 | BL | $53.3K | Payment | 1,034 | $51.59 | Discretionary |
| Aug 20, 2024 | BL | $57.1K | Payment | 1,107 | $51.59 | Discretionary |
| Jun 4, 2024 | BL | $700.0K | Option Exercise | 50,000 | $14.00 | Planned |
| Jun 4, 2024 | BL | $286.5K | Sale | 5,971 | $47.99 | Planned |
| Jun 4, 2024 | BL | $2.1M | Sale | 44,029 | $47.30 | Planned |
| May 20, 2024 | BL | $241.0K | Payment | 4,163 | $57.88 | Discretionary |
| Mar 17, 2024 | BL | $0 | Award | 43,100 | $N/A | Discretionary |
| Feb 20, 2024 | BL | $711.6K | Payment | 12,387 | $57.45 | Discretionary |
| Feb 20, 2024 | BL | $0 | Award | 10,132 | $N/A | Discretionary |
| Feb 20, 2024 | BL | $213.8K | Payment | 3,721 | $57.45 | Discretionary |
| Feb 20, 2024 | BL | $374.2K | Payment | 6,513 | $57.45 | Discretionary |
| Nov 20, 2023 | BL | $172.6K | Payment | 2,991 | $57.69 | Discretionary |
| Aug 18, 2023 | BL | $155.7K | Payment | 2,991 | $52.07 | Discretionary |
| May 19, 2023 | BL | $160.3K | Payment | 2,991 | $53.59 | Discretionary |
| May 1, 2023 | BL | $277.1K | Sale | 5,000 | $55.42 | Discretionary |
| May 1, 2023 | BL | $70.0K | Option Exercise | 5,000 | $14.00 | Discretionary |
| Apr 3, 2023 | BL | $544.1K | Sale | 8,437 | $64.49 | Discretionary |
| Apr 3, 2023 | BL | $140.0K | Option Exercise | 10,000 | $14.00 | Discretionary |
| Apr 3, 2023 | BL | $101.5K | Sale | 1,548 | $65.55 | Discretionary |
| Apr 3, 2023 | BL | $995 | Sale | 15 | $66.30 | Discretionary |
| Mar 7, 2023 | BL | $0 | Award | 34,940 | $N/A | Discretionary |
| Mar 2, 2023 | BL | $350.0K | Sale | 5,000 | $70.00 | Discretionary |
| Mar 2, 2023 | BL | $70.0K | Option Exercise | 5,000 | $14.00 | Discretionary |
| Mar 1, 2023 | BL | $6.1K | Sale | 88 | $69.67 | Discretionary |