…and meet General Motors (GM) CEO Mary Barra, IBM (IBM) chief Ginni Rometty, author Anne-Marie Slaughter and 400 other women leaders in business and other fields. Also in the mix: Warren Buffett. The Berkshire Hathaway (BRKA) CEO attends the Fortune Most Powerful Women Summit each year. This year, as usual, Buffett will share his outlook on business and the economy—and you can watch it live. Watch our livestream on Fortune.com, beginning on Monday October 12, 2015.

While the annual MPW Summit, now in its 17th year, is an invitation-only gathering of the world’s most influential women, it is open to the public online. Fortune will live-stream all of the main-stage sessions, starting Monday evening—featuring interviews with Sen. Kirsten Gillibrand (D-NY) and Yahoo (YHOO) Global News Anchor Katie Couric—through the program’s closing speaker, U.S. Attorney General Loretta Lynch, at 11 a.m. on Wednesday, October 14.

The Summit’s gala Tuesday evening program features First Lady Michelle Obama plus a conversation with Xerox CEO Ursula Burns and U.S. Chief Technology Officer Megan Smith about jobs in STEM and what it takes to build successful careers.

For the full agenda, click here. Follow the Fortune MPW Summit coverage on Twitter at #FortuneMPW. And watch it live on Fortune.com.

Here’s a guide to who’s on and when:

MONDAY, OCTOBER 12

7:30 PM-9:00 PM: Remarks by Congresswoman Elise Stefanik, U.S. House of Representatives (R-NY), followed by a conversation with Kirsten Gillibrand, U.S. Senator, New York State and Katie Couric, Global News Anchor, Yahoo

TUESDAY, OCTOBER 13

9:05 AM: Fortune Global Women Leaders Award honorees Tidings Chimphondah and Hanan Khalil
9:20 AM: Warren Buffett, Chairman and CEO, Berkshire Hathaway
10:00 AM: Irene Rosenfeld, Chairman and CEO, Mondelēz International
10:20 AM: Ginni Rometty, President and CEO, IBM
10:35 AM: Marillyn Hewson, Chairman, President, and CEO, Lockheed Martin
12:05 PM: Penny Pritzker, Secretary of Commerce, U.S. Department of Commerce
12:20 PM: Gina Raimondo, Governor, Rhode Island
12:30 PM: Muriel Bowser, Mayor, Washington, D.C
12:45 PM: Michèle Flournoy, CEO, Center for a New American Security, and Fran Townsend, EVP, Worldwide Government, Legal and Business Affairs, MacAndrews & Forbes, and former Homeland Security Advisor to the U.S.
1:00 PM: Congresswoman Cathy McMorris Rodgers, U.S. House of Representatives (R-WA)
2:45 PM: Kathy Kennedy, President, Lucasfilm
3:05 PM: Lt Gen Michelle Johnson, Superintendent, United States Air Force Academy
3:20 PM: Mary Barra, CEO, General Motors
3:45 PM: Megyn Kelly, Anchor, The Kelly File, Fox News

A SPECIAL FORTUNE MPW EVENING

6:30 PM: Remarks by First Lady Michelle Obama, followed by a conversation with Xerox Chairman and CEO Ursula Burns and U.S. Chief Technology Officer Megan Smith.

WEDNESDAY, OCTOBER 14

8:35 AM: Susan Desmond-Hellmann, CEO, Bill and Melinda Gates Foundation
9:00 AM: Heather Bresch, CEO, Mylan NV
9:15 AM: Cathy Engelbert, CEO, Deloitte
9:30 AM: Ivanka Trump, founder and CEO, the Ivanka Trump Collection; EVP, Development and Acquisitions, The Trump Organization
9:45 AM: Mary Dillon, CEO, Ulta Beauty
9:55 AM: Anne-Marie Slaughter, President and CEO, New America
10:10 AM: TBA
10:25 AM: Greta Van Susteren, Host, On the Record with Greta Van Susteren, Fox News and Amy Walter, National Editor, The Cook Political Report
10:40 AM: Samantha Power, U.S. Permanent Representative to the UN
11:00 AM: The Honorable Loretta E. Lynch, U.S. Attorney General

Click here for more on the MPW Summit and here for more Fortune MPW coverage.