United States · Investor

Tamarack Global

Last cheque observed May 2026; 7 cheques on record.

Email

VC firmDeploying nowNew fund $6.2M, Sept 2026

SeedSeries ASeries BDefense TechNatsecEnergy

Deploying now
83%of best year5cheques in 12 months, 7 on record
Since the last cheque168days00hrs00min00sec
Median round$150MRounds led1 of 7Mostly inUnited States, 86%
Pitch Tamarack Global

Another investor of this name exists, and we could not establish from the rounds which of them the press meant. Treat the record below as possibly belonging to either. Tell us which if you know.

Tamarack Global highlights

  1. 01

    5 cheques in the last 12 months

  2. 02

    Mostly Series A and Growth: 57% of its rounds

  3. 03

    Led 1 rounds

What they do

Tamarack Global is a venture capital firm that invests in exceptional founders and companiesFrom their own website
Type
VC firm (from a list, unverified)
Cheque size
Not stated
Stages
SeedSeries ASeries BGrowth
Sectors
Defense TechNatsecEnergy
Based in
Greenwich, United States
Cold pitches
Not accepted

The record

Every round we can evidence, newest first7 appearances

  1. 2026

    4 rounds

  2. May
    HarkSeries A · US · TechCrunch$700MWith 11 others
  3. Apr
    RilianSeed · US · TechStartups$18MLed
  4. Apr
    Blue EnergyGrowth · US · TechCrunch$380MWith 3 others
  5. Mar
    IsembardSeries A · GB · Ventureburn$50MWith 7 others
  6. 2025

    2 rounds

  7. Dec
    AntithesisSeries A · US · Ventureburn$105MWith 9 others
  8. Sept
    FigureSeries C · US · Crunchbase News$1.0BWith 14 others
  9. 2024

    1 round

  10. Oct
    Impulse SpaceSeries B · US · TechCrunch$150MWith 14 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

Named by the firm itself, on a filing, its Form ADV or its company registration8 named

CJChristine John FletcherDirectoriFiling they signed
GJGeorgia John PrinslooDirectoriFiling they signed
IJIsatou John SeyDirectoriFiling they signed
JBJames Bainbridge LeeManager of Tamarack Global, General Partner, LLC, General Partner of Tamarack Global Opportunities II, LP.iFiling they signed
JWJohn Walker McCormickManager of Tamarack Global, General Partner, LLC, General Partner of Tamarack Global Opportunities II, LP.iFiling they signed
JJJustin John FerayorniManaging member of Tamarack Capital Management, LLC, its general partneriFiling they signed
LJLeon John RhuleDirectoriFiling they signed
SJSabrina John FosterDirectoriFiling they signed

We also hold 11 people 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.

What the register says

From the firm's own filings with the SEC, which it must file accurately by law

$398Mgross assets of its fundsOct 2026
Exemptreporting adviserventure or small private funds
Legal name
Tamarack Global Manager LLC
SEC number
CRD 314862

Who they invest alongside

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

Align VenturesVC firm2rounds togetherIntel CapitalCorporate VC2rounds togetherNVIDIACompany2rounds togetherParkway Venture CapitalVC firm2rounds togetherQualcomm VenturesCorporate VC2rounds togetherSalesforce VenturesCorporate VC2rounds together

Recently backed

The latest companies Tamarack Global put money into.

Hark$700M · May 2026Blue Energy$380M · Apr 2026Isembard$50M · Mar 2026Antithesis$105M · Dec 2025Figure$1.0B · Sept 2025Impulse Space$150M · Oct 2024

Mentioned on podcasts

Episodes that name Tamarack Global in their description, not their title.

Quick answers about Tamarack Global

What does Tamarack Global invest in?

Tamarack Global invests most often at Series A and Growth (57% of the rounds on record), in sectors such as Defense Tech, Natsec and Energy.

How active is Tamarack Global?

7 investments on record, 5 of them in the last 12 months, and it led 1. The most recent was in May 2026.

What has Tamarack Global invested in recently?

Its most recent investments on record: Hark (Series A, May 2026), Rilian (Seed, Apr 2026) and Blue Energy (Growth, Apr 2026).

How big are Tamarack Global's cheques?

The median round it joins is $150M.

Does Tamarack Global lead rounds?

Sometimes: it led 1 of its 7 investments on record (14%).

Where does Tamarack Global invest?

Most of the companies it backs are in the United States (86%) and the United Kingdom (14%).

Is Tamarack Global investing now?

Yes: it is actively investing, with 5 investments in the last 12 months.

Who does Tamarack Global invest alongside?

Most often Align Ventures (2 rounds together), Intel Capital (2 rounds together) and NVIDIA (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