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

Date of Report (Date of earliest event reported): May 20, 2026

Delaware

1-8002

04-2209186

(State of incorporation)

(Commission File Number)

(I.R.S. Employer Identification Number)

168 Third Avenue

Waltham, Massachusetts 02451

Registrant’s telephone number, including area code: (781) 622-1000

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, $1.00 par value

TMO

New York Stock Exchange

1.450% Notes due 2027

TMO 27

New York Stock Exchange

1.750% Notes due 2027

TMO 27B

New York Stock Exchange

Floating Rate Notes due 2027

TMO 27D

New York Stock Exchange

0.500% Notes due 2028

TMO 28A

New York Stock Exchange

1.375% Notes due 2028

TMO 28

New York Stock Exchange

1.950% Notes due 2029

TMO 29

New York Stock Exchange

0.875% Notes due 2031

TMO 31

New York Stock Exchange

2.375% Notes due 2032

TMO 32

New York Stock Exchange

3.650% Notes due 2034

TMO 34

New York Stock Exchange

3.628% Notes due 2035

TMO 35A

New York Stock Exchange

2.875% Notes due 2037

TMO 37

New York Stock Exchange

1.500% Notes due 2039

TMO 39

New York Stock Exchange

1.875% Notes due 2049

TMO 49

New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company 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.  ☐

At the Annual Meeting held on May 20, 2026, the shareholders of the Company voted on the following proposals:

1.    The following nominees were elected to the Company’s Board of Directors for a one-year term expiring at the 2027 annual meeting of shareholders.

						For						Against						Abstain
Marc N. Casper						294,015,478						20,501,640						1,202,257
Nelson J. Chai						293,142,241						21,615,744						961,390
Ruby R. Chandy						312,259,374						2,490,403						969,598
C. Martin Harris						285,543,740						28,753,064						1,422,571
Tyler Jacks						304,372,357						10,373,697						973,321
Jennifer M. Johnson						304,583,443						10,151,215						984,717
R. Alexandra Keith						308,290,311						6,269,824						1,159,240
Karen S. Lynch						308,933,071						5,811,374						974,930
Debora L. Spar						314,426,121						311,821						981,433
Scott M. Sperling						292,218,754						22,524,675						975,946
Dion J. Weisler						281,791,656						32,960,105						967,614

2.    A non-binding, advisory proposal on the compensation of the Company’s named executive officers was not approved.

For						Against						Abstain
99,928,178						214,525,673						1,265,524

3.    The appointment of PricewaterhouseCoopers LLP as the independent registered public accounting firm for the Company for the fiscal year ending December 31, 2026 was ratified.

For						Against						Abstain
296,866,709						36,064,900						999,237

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.