Sean Bielat

Bielat grew up in Rochester, New York, where he attended McQuaid Jesuit High School. He currently resides with his wife, two sons, and daughter in Carlisle, Massachusetts. Bielat serves on various boards. Previously, he worked as CEO of Endeavor Robotics, which he helped carve out of iRobot Corporation in 2016. In 2019, Endeavor Robotics was sold to FLIR Systems for $382 million. Bielat had previously held a position at Bedford, Massachusetts-based iRobot Corporation, where he directed their PackBot program, a $100 million defense robotics program.

Bielat ran against Joseph Kennedy III for the same seat in 2012, but lost.

In January 2012, Bielat announced his intention to again run for the 4th district seat. Frank announced his retirement from Congress and did not seek reelection.

During his 2010 campaign, Bielat's expressed views were mostly consistent with most Republicans. He opposes the Patient Protection and Affordable Care Act and called for its repeal, calling the health care reform bill "very flawed" but adding that he was in favor of some sort of health care reform. Bielat was in favor of extending the Bush tax cuts, the series of tax cuts that occurred during President George W. Bush's term in office. He opposed the Dodd–Frank Wall Street Reform and Consumer Protection Act, which was championed by his opponent, and called Frank a "key player in America's financial collapse," blaming him for promoting "much of what caused" the Great Recession. He opposes abortion, but favors same-sex marriage in Massachusetts. Unlike other Republicans, Bielat "expressed a willingness to support increased federal spending on transportation and infrastructure."

On September 17, 2010, Bielat defeated Norfolk businessman Earl Sholley in the district's Republican primary by more than 4000 votes, with a final vote tally of 60 percent to 40 percent.

Massachusetts's 4th district was considered a "solidly Democratic" seat; the district gave Barack Obama 63 percent of the vote in the 2008 presidential election and Massachusetts United States Senator John Kerry 65 percent of the vote in his 2004 presidential election.

Bielat lost the election, receiving 43.4% of the votes to Frank's 53.9%. It was Frank's closest finish since his first campaign for Congress in 1980.

Sean D. Bielat (born May 14, 1975) is an American businessman and retired from the United States Marine Corps Reserve as a Major. In 2010, he was the Republican candidate for United States Congress in Massachusetts's 4th congressional district, losing to the incumbent, Democrat Barney Frank.