Association for Corporate Growth Pittsburgh, Financial Executives International, Financial Industries Network, National Association of Corporate Directors -- Three Rivers, Pittsburgh Venture Capital Association and Turnaround Management Association, 5 p.m., Heinz Hall, Downtown. Holiday party. Visit www.acg.org/pittsburgh.
South Hills Toastmasters, Club 847 District 13, 7 p.m., Peters Township Public Library, McMurray. Meeting. Visit 847.toastmastersclubs.org or call 412-337-6972.
Disability Matters with Joyce Bender, 2 p.m., online. Speaker: Eric Walrabenstein, author, speaker, founder of Operations Bootstrap. Visit www.voiceamerica.com.
MIT Enterprise Forum of Pittsburgh, 6:30 p.m. (5:30 p.m., networking/registration) Thermo Fisher Scientific, 100 Technology Drive. Program: "Big Data in Life Sciences." Panelists: Rick Cancelliere, CEO/founder, Treatspace; Kevin Hutchison, president/CEO, Health Monitoring Systems; and Jerome Pesenti, co-founder, Vivisimo. Visit www.enterpriseforumpittsburgh.com.
Volunteers of America/Working Order, noon, 1650 Main St., Sharpsburg. Brown bag lunch: "The ABC's of Selling Online." Speaker: Robert Stein, University of Pittsburgh, The Institute for Entrepreneurial Excellence. Call 412-782-5344, ext. 209.
University of Pittsburgh Institute for Entrepreneurial Excellence, 6 p.m., J. Verno Studio, 3030 Jane St., South Side. Winter Social. Visit http://register.towercare.com/pitt-iee, or call Tara Gerek at 412-648-1389.
Business Calendar appears every Sunday. To propose an item, send it to: Natalie Hill, Business Calendar, Pittsburgh Post-Gazette, 34 Blvd. of the Allies, Pittsburgh, PA 15222, fax to 412-263-0908 or email to firstname.lastname@example.org.