Investor

Stewart Butterfield

Last cheque observed Oct 2026; 15 cheques on record.

Email

AngelDeploying now

Series ASeedSeries B

Deploying now
100%of best year4cheques in 12 months, 15 on record
Since the last cheque29days00hrs00min00sec
Median round$35MRounds led0 of 15Exits1 from the portfolioMostly inUnited States, 62%
Pitch Stewart Butterfield

Stewart Butterfield highlights

  1. 01

    4 cheques in the last 12 months

  2. 02

    Mostly Series A and Seed: 73% of its rounds

  3. 03

    1 exits from the portfolio

What they do

Type
Angel (from a list, unverified)
Cheque size
Not stated
Cold pitches
Not stated

The record

Every round we can evidence, newest first15 appearances

  1. 2026

    3 rounds

  2. Oct
    Gardens InteractiveSeries B · US · The SaaS News$35MWith 10 others
  3. Jul
    CentralizeSeries A · US · Crunchbase News$15MWith 7 others
  4. May
    ViktorSeries A · PL · Ventureburn$75MWith 10 others
  5. 2025

    2 rounds

  6. Nov
    BesideSeries A · Ventureburn$32MWith 3 others
  7. Jul
    LovableSeries A · SE · Crunchbase News$200MWith 9 others
  8. 2023

    1 round

  9. Sept
    LinearSeries B · US · Karri Saarinen$35MWith 16 others
  10. 2015

    2 rounds

  11. Aug
    CozyVenture · US$3.4MWith 4 others
  12. Apr
    ThingtonSeed · USUndisclosedWith 7 others
  13. 2011

    4 rounds

  14. Apr
    Series A · techcrunch.com$35MWith 3 others
  15. Apr
    99designsSeries A · US$35MWith 3 others
  16. Mar
    Bloom StudioSeed · GB · networkeffect.allthingsd.comUndisclosedWith 6 others
  17. Mar
    SummifySeed · CA · techcrunch.comUndisclosedWith 7 others
  18. 2009

    1 round

  19. Jan
    RouxbeSeries B · CA$2.1MWith 1 other
  20. 2008

    1 round

  21. Jan
    FlowgramSeed · US · silicontap.com$1.3MWith 7 others
  22. 2006

    1 round

  23. Nov
    EtsySeries A · US · techconfidential.com$1.0MWith 4 others

An announcement gives the size of the round, not the size of this investor's cheque: the only rounds that imply a cheque are those where they were the sole named investor.

The team

We hold 1 person at this firm from the lists this database was built from: a weaker source than the filings, since a list does not say when a title ended. Login to see them.

Exits from the portfolio

Companies it backed that were later bought or listed1 in all

SummifyBought by TwitterUndisclosedJan 2012

An exit counts when it came after the firm's first round in the company. From historical deal records.

Who they invest alongside

The investors most often in the same rounds as Stewart Butterfield. A count of rooms they were both in, not a relationship either has claimed.

AccelVC firm7rounds togetherAnthony CasalenaVC firm2rounds togetherCal HendersonAngel2rounds togetherCaterina FakeVC firm2rounds togetherGuillermo RauchVC firm2rounds togetherIndex VenturesVC firm2rounds togetherJoi ItoAngel2rounds togetherMichael DearingAngel2rounds together

Recently backed

The latest companies Stewart Butterfield put money into.

Gardens Interactive$35M · Oct 2026Beside$32M · Nov 2025Lovable$200M · Jul 2025

On podcasts

6 episodes naming Stewart Butterfield in the title, and 4 more that mention it.

Mentioned in

Quick answers about Stewart Butterfield

What does Stewart Butterfield invest in?

Stewart Butterfield invests most often at Series A and Seed (73% of the rounds on record).

How active is Stewart Butterfield?

15 investments on record, 4 of them in the last 12 months. The most recent was in Oct 2026.

What has Stewart Butterfield invested in recently?

Its most recent investments on record: Gardens Interactive (Series B, Oct 2026), Centralize (Series A, Jul 2026) and Viktor (Series A, May 2026).

How big are Stewart Butterfield's cheques?

The median round it joins is $35M.

Does Stewart Butterfield lead rounds?

Rarely, if at all: none of its 15 investments on record names it as the lead.

Where does Stewart Butterfield invest?

Most of the companies it backs are in the United States (62%), Canada (15%) and Poland (8%).

Is Stewart Butterfield investing now?

Yes: it is actively investing, with 4 investments in the last 12 months.

Who does Stewart Butterfield invest alongside?

Most often Accel (7 rounds together), Anthony Casalena (2 rounds together) and Cal Henderson (2 rounds together).

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Built from the rounds we watched, its filings and its own website, refreshed every night. How we count · Report a correction · Is this your firm? Claim it