Quanterix (NASDAQ: QTRX) CTO exercises 130 RSUs; holds 33,795 shares
Rhea-AI Filing Summary
Quanterix Chief Technology Officer Michael Francis Miller reported the vesting of 130 restricted stock units, which converted into the same number of common shares on May 31, 2026. 39 of these shares were withheld at $3.06 per share to cover tax obligations, and he now directly holds 33,795 Quanterix common shares. The restricted stock units are part of a 6,278-unit grant from September 23, 2022 that vests 25% after one year and the remaining 75% in 36 equal monthly installments.
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Insider Trade Summary
Net Buyer: 91 shares
Net Buy
3 txns
Insider
Miller Michael Francis
Role
Chief Technology Officer
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Restricted Stock Unit | 130 | $0.00 | $0.00 |
| Exercise | Common Stock | 130 | $0.00 | $0.00 |
| Exercise Price or Tax Liability | Common Stock | 39 | $3.06 | $119.34 |
Holdings After Transaction:
Restricted Stock Unit — 419 shares (Direct);
Common Stock — 33,795 shares (Direct)
Footnotes (2)
- F1. Restricted stock units convert into common stock on a one-for-one basis.
- F2. On September 23, 2022, the reporting person was granted 6,278 restricted stock units, vesting 25% on the first anniversary of the grant date, with the remaining 75% vesting in 36 equal monthly installments on the last day of each month thereafter.
Key Figures
RSUs converted to common stock: 130.0000
Shares withheld for taxes: 39.0000
Tax withholding price per share: 3.0600
+4 more
7 metrics
RSUs converted to common stock
130.0000
Restricted stock units converted into common stock on May 31, 2026
Shares withheld for taxes
39.0000
Common shares withheld at $3.06 per share to cover tax obligations
Tax withholding price per share
3.0600
Per-share value used for the 39-share tax-withholding disposition
Post-transaction common stock holdings
33,795
Directly held Quanterix common shares after the reported transactions
Original RSU grant size
6,278
Restricted stock units granted on September 23, 2022
Initial vesting percentage
25%
Portion of the RSU grant that vests on the first anniversary of the grant date
Remaining vesting percentage
75%
Portion of the RSU grant vesting in 36 equal monthly installments
Key Terms
Restricted Stock Unit, tax-withholding disposition, derivative security
3 terms
Restricted Stock Unit financial
"Restricted stock units convert into common stock on a one-for-one basis"
A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.
tax-withholding disposition financial
"Payment of exercise price or tax liability by delivering securities"
A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.
derivative security financial
"Exercise or conversion of derivative security"
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.
AI-generated analysis. How Rhea-AI works. Not financial advice.
FAQ
What insider transaction did Quanterix (QTRX) report for its CTO?
Quanterix CTO Michael Francis Miller converted 130 restricted stock units into common stock on May 31, 2026. 39 of the resulting shares were withheld at $3.06 per share to satisfy tax obligations, and he now directly holds 33,795 Quanterix shares.
What was the size and vesting schedule of the CTO’s RSU grant at Quanterix (QTRX)?
Michael Francis Miller received a grant of 6,278 restricted stock units on September 23, 2022. 25% vests on the first anniversary of the grant date, with the remaining 75% vesting in 36 equal monthly installments on the last day of each month thereafter.