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Quanterix Corp — Director's Dealing 2026
Feb 18, 2026
33531_dirs_2026-02-18_ba7091c2-fc97-4d61-82bc-0c6c99f89be1.zip
Director's Dealing
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SEC Form 4 — Statement of Changes in Beneficial Ownership
Issuer: Quanterix Corp (QTRX)
CIK: 0001503274
Period of Report: 2026-02-15
Reporting Person: Sriram Vandana (N/A)
Non-Derivative Transactions
| Date | Security | Code | Shares | Price | A/D | Holdings After | Ownership |
|---|---|---|---|---|---|---|---|
| 2026-02-15 | Common Stock | M | 514.00 | — | Acquired | 26248.00 | Direct |
| 2026-02-15 | Common Stock | F | 179.00 | $5.74 | Disposed | 26069.00 | Direct |
| 2026-02-15 | Common Stock | M | 263.00 | — | Acquired | 26332.00 | Direct |
| 2026-02-15 | Common Stock | F | 92.00 | $5.74 | Disposed | 26240.00 | Direct |
Derivative Transactions
| Date | Security | Exercise Price | Code | Shares | A/D | Expiration | Underlying | Ownership |
|---|---|---|---|---|---|---|---|---|
| 2026-02-15 | Performance Stock Unit | $0.00 | A | 74905.00 | Acquired | 2026-12-31 | Common Stock (74905.00) | Direct |
| 2026-02-15 | Restricted Stock Unit | $0.00 | A | 74905.00 | Acquired | Common Stock (74905.00) | Direct | |
| 2026-02-15 | Restricted Stock Unit | $0.00 | M | 263.00 | Disposed | Common Stock (263.00) | Direct | |
| 2026-02-15 | Restricted Stock Unit | $0.00 | M | 514.00 | Disposed | Common Stock (514.00) | Direct |
Footnotes
F1: Restricted stock units convert into common stock on a one-for-one basis.
F2: The total shown no longer includes 55,884 unvested RSUs which the reporting person previously reported in Table I of Form 4 and will hereafter report in Table II of Form 4.
F3: Each PSU award to vest (subject to the employee's continued service to the Company on the applicable vesting dates) according to the schedule and conditions set forth in the executive long-term incentive plan contained in the Company's 2026 Employee Equity Guidelines. After the award's performance conditions are satisfied, the PSUs will vest in four equal annual installments on each of the first four anniversaries of the Transaction Date.
F4: The award vests in four equal annual installments on each of the first four anniversaries of the Transaction Date.
F5: On August 21, 2023, the reporting person was granted 12,624 restricted stock units, vesting 25% on the first anniversary of the grant date, with the remaining 75% vesting in equal monthly installments of 6.25% on the monthly anniversary of the grant date thereafter.
F6: On February 2, 2024, the reporting person was granted 24,675 restricted stock units, vesting 25% on the first anniversary of the grant date, with the remaining 75% vesting in equal monthly installments of 6.25% on the monthly anniversary of the grant date thereafter.