Mersana Therapeutics (NASDAQ: MRSN) set for Nasdaq listing removal

Rhea-AI Filing Summary

Mersana Therapeutics, Inc. is having its common stock removed from listing and/or registration on the Nasdaq Stock Market LLC, as reflected in a Form 25 filing under Section 12(b) of the Securities Exchange Act of 1934. Nasdaq certifies that it has reasonable grounds to believe it meets all requirements for filing this notification and that it has complied with its own rules for striking the class of securities from listing and withdrawing registration.

Positive

• None.

Negative

• Mersana Therapeutics common stock being removed from Nasdaq listing and/or registration, which can significantly affect liquidity and market visibility compared with a national exchange listing.

Insights

Equity markets & listing analyst

Nasdaq is removing Mersana Therapeutics’ common stock from listing.

The filing shows that Nasdaq Stock Market LLC submitted a Form 25 to remove Mersana Therapeutics, Inc. common stock from listing and/or registration under Section 12(b) of the Exchange Act. Nasdaq states it has complied with its own rules to strike this class of securities and certifies it meets the requirements to file the form.

When a stock is removed from a major exchange, trading often moves to less prominent venues, which can reduce liquidity and market visibility compared with a national exchange. The filing does not state the reason or any follow-on trading venue, so the main confirmed fact is the termination of the Nasdaq listing and registration for this class of common stock.

UNITED STATES

OMB APPROVAL

OMB Number:			3235-0080
Expires:	March 31, 2018
Estimated average burden
hours per response:			1.7

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 25

NOTIFICATION OF REMOVAL FROM LISTING AND/OR REGISTRATION
UNDER SECTION 12(b) OF THE SECURITIES EXCHANGE ACT OF 1934.

Commission File Number

001-38129

Issuer:	Mersana Therapeutics, Inc.
Exchange:	Nasdaq Stock Market LLC

(Exact name of Issuer as specified in its charter, and name of Exchange where security is listed and/or registered)

Address:	840 Memorial Drive
	Cambridge	MASSACHUSETTS	02139
Telephone number:					617-715-8233

(Address, including zip code, and telephone number, including area code, of Issuer's principal executive offices)

common stock

(Description of class of securities)

Please place an X in the box to designate the rule provision relied upon to strike the class of securities from listing and registration:

17 CFR 240.12d2-2(a)(1)

17 CFR 240.12d2-2(a)(2)

17 CFR 240.12d2-2(a)(3)

17 CFR 240.12d2-2(a)(4)

Pursuant to 17 CFR 240.12d2-2(b), the Exchange has complied with its rules to strike the class of securities from listing and/or withdraw registration on the Exchange. ¹

Pursuant to 17 CFR 240.12d2-2(c), the Issuer has complied with its rules of the Exchange and the requirements of 17 CFR 240.12d-2(c) governing the voluntary withdrawal of the class of securities from listing and registration on the Exchange.

Pursuant to the requirements fo the Securities Exchange Act of 1934, Nasdaq Stock Market LLC certifies that it has reasonable grounds to believe that it meets all of the requirements for filing the Form 25 and has caused this notification to be signed on its behalf by the undersigned duly authorized person.

2026-01-06	By	Tara Petta		AVP
Date		Name		Title

¹ Form 25 and attached Notice will be considered compliance with the provisions of 17 CFR 240.19d-1 as applicable. See General Instructions.

Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What does the Mersana Therapeutics (MRSN) Form 25 filing show?

It shows that Nasdaq Stock Market LLC filed a Form 25 to remove Mersana Therapeutics, Inc. common stock from listing and/or registration under Section 12(b) of the Exchange Act.

Which securities of Mersana Therapeutics are affected in this Form 25?

The filing applies to Mersana Therapeutics, Inc. common stock, which is being removed from listing and/or registration on the Nasdaq Stock Market LLC.

Which exchange is involved in the Mersana Therapeutics delisting?

The exchange involved is the Nasdaq Stock Market LLC, which is striking Mersana Therapeutics’ common stock from listing and/or withdrawing its registration.

Under what authority is Mersana Therapeutics’ stock being removed from listing?

The removal is made under Section 12(b) of the Securities Exchange Act of 1934 and related rules, including 17 CFR 240.12d2-2.

Who signed the Form 25 related to Mersana Therapeutics’ Nasdaq listing?

The notification was signed on behalf of Nasdaq Stock Market LLC by Tara Petta, identified as AVP, certifying Nasdaq has reasonable grounds to file the Form 25.

Does the Form 25 say Nasdaq followed its own rules for Mersana Therapeutics’ delisting?

Yes. Nasdaq states that, pursuant to 17 CFR 240.12d2-2(b), it has complied with its rules to strike the class of securities from listing and/or withdraw registration on the exchange.