The Boring Company Announces Series D Funding
The Boring Company announced on Sept. 9 its Series D funding round of $3B, led by the United Arab Emirates and affiliated investment entities. The financing now values The Boring Company at $23 billion.
According to a released posted on The Boring Company website: “Building upon significant existing success collaborating with the UAE on Dubai Loop, this strategic investment will accelerate the partnership to deploy mass quantities of underground infrastructure across the United Arab Emirates, including 150+ kilometers of tunnel. This landmark agreement is in addition to the Dubai Loop project previously awarded.”
Other key investors in the round include Human Capital, Vy Capital, Valor Equity Partners, Sequoia Capital, A16Z, Temasek, Shamal Holding, and Baron Capital, in addition to other existing and new investors.
The Boring Company continues to operate in Las Vegas, reporting that it has 14 tunnels completed or underway in the area. as part of what it calls the “Vegas Loop.” In July 2025, the company and the State of Tennessee announced “Music City Loop,” a privately funded underground system connecting downtown Nashville, the Music City Center, and Lower Broadway with Nashville International Airport. Tunneling started on Feb. 25, 2026, after receiving a Tennessee Department of Transportation permit. The project is the company’s first in hard rock. By August 2026, two machines were mining simultaneously and a third was in final assembly in Bastrop for shipment to Nashville.
Internationally, The Boring Company signed a construction contract with Dubai’s Roads and Transport Authority for the pilot phase of Dubai Loop: 6.4 kilometers of tunnel and four stations, with construction planned to begin in late 2026. Precast production for that pilot is already underway.
