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Mersana Therapeutics (MRSN) executive Mandelia sold 1,791 shares for $1,128 at $0.63 under a 10b5-1 plan

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Insider transactions reported

Ashish Mandelia (VP, Chief Accounting Officer at Mersana Therapeutics Inc., MRSN) reported that they sold 1,791 shares for $1,128 at $0.63, and acquired 4,783 shares between Jan 14, 2025 and Jan 15, 2025. After these transactions the filing shows 52,388 shares held directly.

Reporting person
Mandelia Ashish
Role
VP, Chief Accounting Officer
Common stock and other non-derivative transactions
DateTypeSecuritySharesPriceValueHeld after
Jan 14, 2025Exercise or conversion of a derivative (M)Common Stock1+4,783--54,179 direct
Jan 15, 2025Open-market sale (S)Common Stock2-1,791$0.63$1,12852,388 direct

Options and other derivatives

Options and other derivative transactions
DateTypeSecuritySharesPriceValueHeld after
Jan 14, 2025Exercise or conversion of a derivative (M)Restricted Stock UnitOn 4,783 Common Stock3, 4-4,783--4,783 direct

Holdings before and after

  • Common Stock: 49,396 to 52,388 direct
  • Restricted Stock Unit: 9,566 to 4,783 direct

Footnotes from the filing

  1. 1. Represents shares of common stock received upon vesting of a portion of the restricted stock units ( RSUs ) awarded to the Reporting Person on January 14, 2022.
  2. 2. Represents the sale of shares of common stock to satisfy the Reporting Person's tax withholding obligations in connection with the service-based vesting and settlement of the RSUs pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 10, 2023. The sale was effected through an automatic sell to cover transaction that did not represent a discretionary trade by the Reporting Person.
  3. 3. Each RSU represents the contingent right to receive one share of common stock of the Issuer.
  4. 4. 25% of the total number of RSUs granted vested on January 14, 2025, and the remainder shall vest on January 14, 2026.

Transaction codes in this filing

Open-market sale:
Code S marks a sale in the open market or a private deal. The insider received cash for these securities.
Exercise or conversion of a derivative:
Code M marks the exercise or conversion of an option or other derivative under an exempt plan.

FAQ

What did Mandelia report in this MRSN Form 4?

Ashish Mandelia (VP, Chief Accounting Officer at Mersana Therapeutics Inc., MRSN) reported that they sold 1,791 shares for $1,128 at $0.63, and acquired 4,783 shares between Jan 14, 2025 and Jan 15, 2025. After these transactions the filing shows 52,388 shares held directly.

How many MRSN shares does Mandelia hold after this filing?

The filing shows 52,388 shares held directly after the reported transactions. Form 4 reports only the positions it lists, so this may not be every holding.

Was this MRSN insider sale made under a 10b5-1 plan?

The filing's footnotes mention a Rule 10b5-1 trading plan. Such a plan sets the terms of future trades in advance.

What does transaction code S mean on an SEC Form 4?

Code S marks a sale in the open market or a private deal. The insider received cash for these securities.

Historical context for MRSN

Earlier insider filings at MRSN

Quantisnow market dataNASDAQ
Mersana Therapeutics Inc. logo
MRSN
Mersana Therapeutics Inc.
Market cap
30-day
Sector
Health Care
Industry
Biotechnology: Pharmaceutical Preparations
Listed since
2017
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