Annual Report 2017

About Twitter, Inc.

Twitter, Inc. (NYSE: TWTR) is the best and fastest place to see what’s happening

and what people are talking about all around the world. From breaking news and

entertainment to sports and politics, from big events to everyday interests. If it’s

happening anywhere, it’s happening first on Twitter. Twitter is where the full story

unfolds with all the live commentary and where live events come to life unlike

anywhere else. Twitter is available in more than 40 languages around the world.

The service can be accessed at Twitter.com, on a variety of mobile devices and

via SMS. For more information, visit about.twitter.com or follow @twitter.

241 241

245

247

250

252

230

240

250

260

Sep 302015

Dec 312015

Mar 312016

Jun 302016

Sep 302016

Dec 312016

Monthly Active Users: International(quarterly average in millions)

6665 65

6667 67

50

55

60

65

70

Sep 302015

Dec 312015

Mar 312016

Jun 302016

Sep 302016

Dec 312016

Monthly Active Users: United States(quarterly average in millions)

307305

310

313

317

319

290

300

310

320

330

Sep 302015

Dec 312015

Mar 312016

Jun 302016

Sep 302016

Dec 312016

Monthly Active Users: Worldwide(quarterly average in millions)

-39%

Mar 312016

Dec 312015

Sep 302015

Jun 302016

Sep 302016

Dec 312016

-41%

-56%56%

-64%

-44%

-60%

(% Change)Cost Per Ad Engagement Year-over-Year Change

165%

Mar 312016

Dec 312015

Sep 302015

Jun 302016

Sep 302016

Dec 312016

153%

208%226%

91%91%

151%

(% Change)Ad Engagement Year-over-Year Change

3%

Mar 312016

Jun 302016

Sep 302016

Dec 312016

5%

7%

11%

(% Change)Daily Active Users Year-over-Year Change

BOARD OF DIRECTORS

Omid KordestaniExecutive Chairman

Marjorie ScardinoLead Independent Director

Bret TaylorChief Executive Officer and

Co-Founder

Quip, Inc.

Martha Lane FoxCo-Founder

lastminute.com

Crossbench Peer

House of Lords

David RosenblattChief Executive Officer

1stdibs.com

Evan WilliamsCo-Founder

Twitter

Chief Executive Officer and

Co-Founder

Medium

Debra LeeChairperson and Chief Executive

Officer

BET Networks

Jack DorseyChief Executive Officer and

Co-Founder

Twitter

Chief Executive Officer and

Co-Founder

Square

Hugh JohnstonVice Chairman and

Chief Financial Officer

PepsiCo, Inc.

EXECUTIVE TEAM

Jack DorseyChief Executive Officer and

Co-Founder

Twitter

Chief Executive Officer and

Co-Founder

Square

Omid KordestaniExecutive Chairman

Anthony NotoChief Operating Officer and

Chief Financial Officer

Vijaya GaddeGeneral Counsel & Secretary

STOCK EXCHANGE

Twitter stock is listed for trading

on the New York Stock Exchange

under the ticker symbol TWTR.

TRANSFER AGENTComputershare Trust Company

250 Royall Street

Canton, MA 02021

Phone: (781) 575-4238

Web: computershare.com/investor

A copy of the Company’s annual

report filed with the Securities and

Exchange Commission (Form 10-K)

and Notice & Proxy Statement will

be furnished without charge to

any shareholder upon request.

By Internet:www.viewproxy.com/twitter/2017

By Phone: (877) 777-2857

By Email: requests@viewproxy.com

INVESTOR RELATIONS1355 Market Street

Suite 900

San Francisco, California 94103

ir@twitter.com

Investor Relations Website: investor.twitterinc.com

Follow @TwitterIR