DOJ Has Spent Nearly a Year Investigating Andreessen Horowitz Over Board Seats at Rival Data Firms

The Justice Department has been investigating Andreessen Horowitz for close to a year over something that sounds almost boring until you realize who's involved. Bloomberg reported Monday, August 17, that federal antitrust officials are probing whether a16z partners improperly sit on the boards of two competing data companies the firm has funded.

The companies are Databricks, valued at $190 billion, and Fivetran, which merged with dbt Labs in June. Ben Horowitz, a16z's co-founder, sits on Databricks' board. Martin Casado, a general partner at the firm, sits on Fivetran's board. Casado also held a board seat at dbt Labs before Fivetran bought it.

The law at issue is Section 8 of the Clayton Act, passed in 1914. It bars one person from serving as a director of two competing corporations when both clear certain financial thresholds, according to the Federal Register. Different individuals hold the two seats here, not the same person, which is part of why this case looks different from prior enforcement actions, according to TheNextWeb.

Why This Wasn't a Problem Until Recently

Databricks and Fivetran weren't rivals when a16z invested, according to a Databricks investor who spoke to TechCrunch on condition of anonymity. Databricks built its name on cloud storage and lakehouse architecture. Fivetran's business has been moving data from applications into warehouses.

That changed when Databricks launched its Lakeflow product, pushing it into AI data pipelines and application connectors, territory that's long been Fivetran's core business, TechCrunch reported. Portfolios drift. Companies pivot. A16z has backed hundreds of startups, and some of them were always going to end up competing with each other eventually.

Several venture capitalists told TechCrunch they were genuinely surprised by the probe, not because the facts are in dispute but because this kind of portfolio overlap is common in venture capital and rarely triggers a Section 8 investigation.

The Political Angle Nobody Can Ignore

Here's what makes this story bigger than a niche antitrust dispute: Andreessen Horowitz is about as close to the Trump White House as a private company gets. Marc Andreessen has said he spent "half" his time after the 2024 election advising Trump at Mar-a-Lago, according to Forbes. He's been appointed to multiple administration advisory boards. Bloomberg has described the firm as a "sounding board" for the White House and its "first outside call" on AI policy.

Both Andreessen and Horowitz donated millions in 2024 to a pro-Trump group, according to Fortune. For fairness, Horowitz also gave $2.5 million to a super PAC supporting Kamala Harris that same cycle, per Fortune's reporting. This isn't a simple story of a MAGA donor getting a free pass revoked.

The Justice Department under Trump is now investigating one of its own closest allies using an enforcement tool that Biden's antitrust chief, Jonathan Kanter, revived and made famous. Under Kanter, then Endeavor Group Holdings CEO Ari Emanuel stepped down from the board of Live Nation Entertainment in 2021, and directors at more than ten other companies gave up board seats across 2022 and 2023, according to Fortune and TheNextWeb.

A DOJ spokesperson gave the same non-answer to multiple outlets, including Forbes, the Daily Caller, and the Washington Examiner: "We can confirm that the DOJ under the Trump Administration will continue to prioritize affordability for all Americans across our economy." It's neither a confirmation nor a denial.

What a16z Could Actually Lose

If the DOJ decides there's a violation, the typical fix is simple: one partner resigns from one board. Fortune reported that's what happened during the Kanter-era enforcement wave, with directors on roughly a dozen boards stepping down.

A16z has an easier out available than most firms would. Because Horowitz and Casado are different people, the firm could build an internal information wall between them, according to an investor who spoke with TechCrunch. That wouldn't require either partner to give up a seat, just formal limits on what they can discuss with each other about the two companies.

The bigger question the venture industry is watching, flagged by both TechCrunch and StockPil, is what happens to board seats generally if the DOJ forces a resignation anyway. Founders court top VC firms partly for the board-level guidance that comes with a big check. If that guidance can evaporate the moment a portfolio company's business model drifts into a rival's lane, some founders may start asking harder questions before handing over a board seat.

The Justice Department hasn't made a final decision, and Fortune reported the case could end with no action at all. Databricks and the DOJ declined to comment. Andreessen Horowitz and Fivetran haven't responded to requests for comment from any outlet that has reported this story. Whether the firm ends up giving up a board seat, building a compliance wall, or facing no consequence at all remains unresolved.