Dez Fleming

Dez Fleming

Principal atFirstMarkFirm active Sep 29New York

Dez Fleming is a Principal at FirstMark, focusing on sourcing investments and supporting portfolio companies. He previously worked at Cadre and Deloitte, and graduated from Cornell University.

What Dez can write

Writes checks of$1M to $30M
Comes in atPre-seed, Seed, Series ACan lead the round
Ownership target7-10%At first check
Email the firm[email protected]The firm's own inbox for founders.

FirstMark writes $1M to $30M checks, larger than 83% of firms in the atlas.

Bars: how many firms report each check band. Highlighted: FirstMark.

Career

  1. Deloitte · M&A strategy practice
  2. Cadre · Commercial Strategy Manager
  3. Firstmark · Principal
    Now

Focus

sourcing investmentsevaluating investmentsportfolio supportproptechfintechvertical saas

Education

Cornell University, B.S in Applied Economics & Management

Also at FirstMark

Partners like Dez

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

Alert me when FirstMark is active

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

Founders and investors at a Mode VC gathering

Send Mode VC your deck

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 Dez Fleming?

Dez Fleming is a Principal at FirstMark, focusing on sourcing investments and supporting portfolio companies. He previously worked at Cadre and Deloitte, and graduated from Cornell University.

How much does Dez Fleming invest?

Dez Fleming invests through FirstMark, which writes checks of $1M to $30M at pre-seed, seed, series a.

How do I pitch Dez Fleming?

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

What did Dez Fleming do before FirstMark?

M&A strategy practice at Deloitte; Commercial Strategy Manager at Cadre.

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