William C. Tsonos serves as Executive at BROOKLINE BANCORP INC, where they oversee executive responsibilities. Since joining the company, William C. Tsonos has executed 23 insider transactions totaling $0, demonstrating a balanced approach to their equity position. Their most recent transaction on Sep 1, 2025 involved selling 38,017 shares valued at $0.
William C. Tsonos currently holds 43,707 shares of BROOKLINE BANCORP INC (BRKL), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, William C. Tsonos has been a net neutral trader of BRKL stock. They have purchased $0 and sold $0 worth of shares.
William C. Tsonos's most recent insider trade was on Sep 1, 2025, when they sold 38,017 shares at $0.00 per share.
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| $11.03 |
| Discretionary |
| Aug 25, 2025 | BRKL | $21.3K | Payment | 1,927 | $11.03 | Discretionary |
| Aug 25, 2025 | BRKL | $9.6K | Payment | 872 | $11.03 | Discretionary |
| Aug 25, 2025 | BRKL | $31.9K | Payment | 2,891 | $11.03 | Discretionary |
| Aug 2, 2025 | BRKL | $3.9K | Payment | 380 | $10.28 | Discretionary |
| Aug 2, 2025 | BRKL | $9.9K | Payment | 964 | $10.28 | Discretionary |
| Aug 2, 2025 | BRKL | $9.0K | Payment | 872 | $10.28 | Discretionary |
| Aug 2, 2025 | BRKL | $1.3K | Payment | 127 | $10.28 | Discretionary |
| Aug 2, 2024 | BRKL | $0 | Award | 9,526 | $N/A | Discretionary |
| Aug 2, 2024 | BRKL | $0 | Award | 9,526 | $N/A | Discretionary |
| Aug 2, 2024 | BRKL | $246 | Payment | 25 | $9.84 | Discretionary |
| Aug 2, 2024 | BRKL | $1.9K | Payment | 195 | $9.84 | Discretionary |
| Aug 2, 2024 | BRKL | $669 | Payment | 68 | $9.84 | Discretionary |
| Aug 2, 2024 | BRKL | $8.6K | Payment | 872 | $9.84 | Discretionary |
| Aug 2, 2024 | BRKL | $1.2K | Payment | 127 | $9.84 | Discretionary |
| Aug 3, 2023 | BRKL | $0 | Payment | 102 | $N/A | Discretionary |
| Aug 3, 2023 | BRKL | $0 | Payment | 20 | $N/A | Discretionary |
| Aug 3, 2023 | BRKL | $0 | Payment | 298 | $N/A | Discretionary |
| Aug 2, 2023 | BRKL | $0 | Payment | 68 | $N/A | Discretionary |
| Aug 2, 2023 | BRKL | $0 | Payment | 127 | $N/A | Discretionary |
| Aug 2, 2023 | BRKL | $0 | Award | 8,617 | $N/A | Discretionary |
| Aug 2, 2023 | BRKL | $0 | Award | 8,617 | $N/A | Discretionary |