Alexander Rosen

Alexander Rosen

Managing Partner atRidge VenturesSan Francisco

Alexander Rosen is Managing Partner and co-founder of Ridge Ventures, focusing on B2B software companies using AI. He has prior experience at Sprout Group and General Atlantic Partners, and holds degrees from MIT and Stanford.

What Alexander can write

Writes checks of$1M to $10M
Comes in atSeed, Series ACan lead the round
Ownership target7-10%At first check
Email the firm[email protected]The firm's own inbox for founders.

Ridge Ventures writes $1M to $10M checks, larger than 83% of firms in the atlas.

Bars: how many firms report each check band. Highlighted: Ridge Ventures.

Career

  1. General Atlantic Partners · associate
  2. Sprout Group · Partner
  3. Ridge Ventures · Managing Partner
    Now
  4. Telcordia
  5. AT&T Bell Labs
  6. Vector Capital · advisor

Companies founded

Ridge Ventures

Investments named in public bios

GoodDayLoopKetchOnticRetail ZiplineSafeGraphSquid AIHorizon3.aiMaintainXBlue BoxBrazeChubbiesFastlyHabuMyNewPlacemySimon

Focus

b2b softwareaiend-user experiences

Education

MITStanford University, MBA

Also at Ridge Ventures

Partners like Alexander

At firms with a similar stage, sector and check size.

Alert me when Ridge Ventures is active

One email when Alexander's firm raises a fund, adds a partner or shows new activity.

Founders and investors at a Mode VC gathering

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Raising a pre-seed or seed round? We write $1M to $5M first checks and help founders with distribution. A partner reads every deck.

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Questions

Who is Alexander Rosen?

Alexander Rosen is Managing Partner and co-founder of Ridge Ventures, focusing on B2B software companies using AI. He has prior experience at Sprout Group and General Atlantic Partners, and holds degrees from MIT and Stanford.

How much does Alexander Rosen invest?

Alexander Rosen invests through Ridge Ventures, which writes checks of $1M to $10M at seed, series a.

How do I pitch Alexander Rosen?

Email [email protected], the firm's inbox for founders, and name Alexander in the subject. A warm intro from a founder Ridge Ventures backed works better.

What did Alexander Rosen do before Ridge Ventures?

associate at General Atlantic Partners; Partner at Sprout Group; Telcordia; AT&T Bell Labs; advisor at Vector Capital.

Last updated 2026-10-15. Is this you? Ask for a correction.