Dropbox's $350 Million Tigris Deal Is 14 Times the Startup's Series A, and Still Only Announced

Dropbox signed a definitive agreement on November 3 to buy Tigris Data for approximately $350 million in cash, which would be the largest acquisition in its history. It has been announced, not closed: the deal still needs customary closing conditions and Dropbox expects to finish it in the fourth quarter of 2026.

The price comes from Dropbox's own Form 8-K, signed by Chief Legal Officer William T. Yoon on November 5. The filing says the cash is "approximately $350 million, subject to customary purchase price adjustments." It also warns of "the risk that the Transaction may not close within the expected timeframe or at all."

How $350 million compares with what Tigris raised

Tigris, based in Sunnyvale, California, sells distributed object storage for AI workloads. Crunchbase News counts about $31.9 million raised in total, including a $25 million Series A in October 2025 led by Spark Capital with Andreessen Horowitz and Basis Set Ventures. Basis Set also led the seed.

Against the total, the price is about 11 times the capital raised. Against the Series A alone it is 14 times. Neither Dropbox nor Tigris has published revenue, so no revenue multiple can be calculated, and the filing gives no figure for how much of the price is contingent on retention.

Ovais Tariq, Tigris's co-founder and CEO, told TechCrunch at the Series A that the company had grown 8x every year since its November 2021 founding, per Crunchbase News. Growth from an unstated base says little about scale.

Where it sits among Dropbox's deals

Dropbox told Crunchbase News this is its largest acquisition since its founding in 2007. The earlier large ones were HelloSign at $230 million in 2019, DocSend at $165 million in 2021 and FormSwift at $95 million in 2022.

1. Tigris Data (2026, pending)350 $ million
2. HelloSign (2019)230 $ million
3. DocSend (2021)165 $ million
4. FormSwift (2022)95 $ million

Source: Crunchbase News and Dropbox Form 8-K, accessed 2026-11-08

Crunchbase counts 35 Dropbox acquisitions. Twenty-three were publicly reported between 2012 and 2015, nine of them in 2014. In 2024 and 2025 it made four, about two a year, roughly 65% below the earlier pace. A buyer that slowed to two small deals a year is now writing a cheque larger than any of its last three combined: $230 million, $165 million and $95 million add up to $490 million, so Tigris is 71% of that sum in one deal.

What Dropbox is buying it for

Dropbox also unveiled DBX Agent Cloud on November 5, which will initially offer standalone object storage for large data collections, including AI training and model files. Eric Webster, Dropbox's chief business officer, said Tigris "brings together a product already running in production, an experienced team." He said the combination would speed Dropbox's entry into infrastructure for AI applications.

That is a different customer from the one Dropbox sells to today. DBX Agent Cloud targets developers building AI applications, a market where data centre capacity is being contracted years ahead.

A price set against capital raised rather than revenue is a weak anchor. Another recent deal, EloElo's Series C, was priced at about 68 times last disclosed revenue, which at least gave a multiple to argue about. Here there is none.

Terms the filing does not give: how many Tigris staff will join and whether any of the cash is held back. The next observable step is Dropbox's fourth-quarter results, which should show whether the deal closed and how much of the $350 million was spent.