United States · Funded startup
Funding summaryUpdated 26 Oct 2026
$128Mraised across 3 rounds since 2013, from 3 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
Source recorded
Polaris Partners
ARCH Venture Partners
Redmile Group
Alexandria Real Estate Equities
Aisling CapitalFrom a historical funding recordSEC filing: $53M sold, first sale Oct 2014
Reported by syros.comSEC filing: $10M sold, first sale Apr 2013
From the SEC filings it signed: 6 on the team.
On the board, as filediAndrew C. OhDeborah DunsireMark AllesMarsha A. FanucciPeter WirthRichard A. YoungSrinivas AkkarajuSue Gail EckhardtTimothy C. Tyson
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
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Syros Pharmaceuticals's investors include ARCH Venture Partners, Redmile Group, Polaris Partners, Alexandria Real Estate Equities and Samsara BioCapital, and 4 more on record.
Syros Pharmaceuticals has raised $128M across 3 rounds since 2013.
Syros Pharmaceuticals's most recent round was an Undisclosed round of $45M in Dec 2023.
Syros Pharmaceuticals's largest round on record is $53M (Series B), in Oct 2014.
Syros Pharmaceuticals's first round on record, in Apr 2013, was backed by ARCH Venture Partners and Flagship Pioneering, LLC.
Syros Pharmaceuticals's latest named round is an Undisclosed round, in Dec 2023.
Syros Pharmaceuticals is based in the United States.
In the same sector, and raised in the last eighteen months.
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United States · 
