EX-16.1 2 finalfastly-letterpar43.htm EX-16.1

Exhibit 16.1

March 5, 2026

Securities and Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549-7561

Dear Sirs/Madams:

We have read Item 4.01 of Fastly, Inc.'s Form 8-K dated March 5, 2026, and have the following comments:

1.We agree with the statements made in paragraphs two through six.

2.We have no basis on which to agree or disagree with the statements made in the first paragraph.

Yours truly,

/s/ DELOITTE & TOUCHE LLP