Apex Nears $500M Round at $4 Billion Valuation, Sources Say

Satellite bus maker Apex is negotiating a roughly $500 million funding round that would value the company near $4 billion — almost twice its valuation from a June round, according to people familiar with the talks. Washington Harbour Partners is lined up to lead, while existing backers Andreessen Horowitz and XYZ Venture Capital are expected to participate.

The sources asked not to be named because the details are not public. The reported $4 billion figure includes the fresh capital. Neither Apex nor Washington Harbour Partners responded to requests for comment. Andreessen Horowitz said it would not comment.

What does Apex actually build?

Los Angeles-based Apex produces standardized satellite buses — the core platform that carries instruments such as cameras and defense technology — and sells them to government and commercial buyers. The company has already launched satellites and serves a broad mix of customers, according to Ross Fubini, managing partner of XYZ Venture Capital and a member of Apex's board.

"It's no surprise that insiders and outsiders have been clamoring to invest," Fubini said.

Apex is also collaborating with Northrop Grumman Corp. on space-based interceptors for President Donald Trump's Golden Dome program, a layered missile defense initiative designed to shield the US from the ground into orbit. That defense tie-in gives the startup a direct claim on one of the most ambitious Pentagon projects now taking shape.

How does the valuation stack up?

The near-doubling from June's mark puts Apex in a space-tech cohort that investors have rewarded handsomely this year. Peer K2 Space recently secured a $6.8 billion valuation. Apex's own trajectory — from its June round to a potential $4 billion — tracks a wider wave of capital moving into satellite infrastructure.

The market backdrop helps. Investor enthusiasm for space assets has grown since SpaceX went public in June at a $1.77 trillion valuation for Elon Musk's company. The weeks after the listing were choppy: SpaceX stock slid, and publicly traded space names such as Rocket Lab Corp. and Firefly Aerospace Inc. declined alongside it. SpaceX shares have since rallied and now trade well above the IPO price.

Why does the round matter for investors?

Apex's push to raise at nearly double its June valuation, alongside big-ticket comparisons like K2 Space and a buoyant post-IPO SpaceX, signals capital is still flowing into space infrastructure plays. For investors tracking upstream space hardware — the platforms that make payloads possible — deal momentum and customer traction are emerging as clearer catalysts than headline launches.

The structure of the round also matters. A $500 million raise led by Washington Harbour Partners with participation from two existing investors suggests insiders are doubling down rather than cashing out. Fubini's board seat at Apex gives XYZ Venture Capital direct visibility into the company's launch cadence and customer mix.

If the round closes at the discussed terms, Apex would join K2 Space in the small club of private space hardware firms commanding multibillion-dollar valuations — a signal that the sector's private market pricing has recovered from the post-SpaceX-IPO wobble. Watch for confirmation of the final figure and the cap table once the company and its backers break their silence.