UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of ~~The~~the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): ~~May~~June 715, 2020

Momenta Pharmaceuticals, Inc.

(Exact name of registrant as specified in its charter)

Delaware		000-50797		04-3561634
(State or Other Jurisdiction of Incorporation)		(Commission File Number)		(IRS Employer Identification No.)

301 Binney Street, Cambridge, MA		02142
(Address of Principal Executive Offices)		(Zip Code)

(617) 491-9700

(Registrant’s telephone number, including area code)

Not applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $0.0001 par value per share	MNTA	The Nasdaq Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

~~Securities~~Item ~~registered~~7.01. ~~pursuant~~Regulation ~~to Section 12(b) of the Act:~~FD

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $0.0001 par value per share	MNTA	The Nasdaq Global Select Market

On June 15, 2020, Momenta Pharmaceuticals, Inc., a Delaware corporation (the “Company”), announced certain of the results of its interim analysis of topline data from its Phase 2 clinical trial of nipocalimab (M281) in general myasthenia gravis. The full text of the press release issued in connection with the announcement is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

~~Item~~The 2Company plans on giving a presentation during its analyst call on June 15, 2020 at 8:30 am EDT.~~02.~~ ~~Results~~A copy of ~~Operations~~the presentation slides is attached as Exhibit 99.2 to this Current Report on Form 8-K and ~~Financial~~is ~~Condition~~incorporated herein by reference.

OnThe ~~May~~information 7,furnished pursuant ~~2020,~~to ~~Momenta~~this ~~Pharmaceuticals~~Current Report on Form 8-K, ~~Inc~~ including Exhibits 99.1 and 99.2 hereto, ashall ~~Delaware~~not ~~corporation~~be (considered “filed” for purposes of Section 18 of the ~~Company~~Securities Exchange Act of 1934, as amended (the “Exchange Act”), ~~announced~~or ~~its~~otherwise ~~financial~~subject to ~~results~~the ~~for~~liabilities of that section, nor shall it be incorporated by reference into future filings by the ~~quarter~~Company ~~ended~~under ~~March~~the 31Securities Act of 1933, ~~2020. The~~as ~~full~~amended, ~~text~~or ofunder the ~~press~~Exchange ~~release~~Act, ~~issued~~unless inthe ~~connection~~Company ~~with~~expressly ~~the~~sets ~~announcement~~forth isin ~~furnished~~such asfuture ~~Exhibit~~filings ~~99.1~~that such information is to ~~this~~be ~~Current~~considered ~~Report on~~“filed” ~~Form~~or ~~8-K~~incorporated by reference therein.

~~The~~Item ~~information in this Current Report on Form 8-K (including Exhibit 99~~9.1)01 ~~shall~~Financial ~~not~~Statements beand deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed to be incorporated by reference into any filing of the Company under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filingExhibits.

~~Item~~(d) ~~9.01. Financial Statements and~~ Exhibits:

(d) Exhibits

Exhibit No.		Description

99.1		Press Release issued by Momenta Pharmaceuticals, Inc. on June 15, 2020

99.2		Slide Presentation

104		The cover page from this Current Report on Form 8-K, formatted in Inline XBRL

The following exhibit relating to Item 2.02 shall be deemed to be furnished, and not filed:

	99.1	Press Release issued by Momenta Pharmaceuticals, Inc. on May 7, 2020
	104	The cover page from this Current Report on Form 8-K, formatted in Inline XBRL.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	MOMENTA PHARMACEUTICALS, INC.
Date: May 7, 2020	By:	/s/Young Kwon
Date: June 15, 2020	By:	/s/ Young Kwon
		Young Kwon Chief Financial and Business Officer
		Young Kwon Chief Business and Financial Officer

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