United States · Investor

HAX

Last cheque observed Sep 2026; 109 cheques on record.

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Deploying nowAccelerator

Pre-seedSeedSeries AEnergyAdvanced ComputeTransportation

Deploying now
53%of best year10cheques in 12 months, 109 on record
Since the last cheque36days00hrs00min00sec
Median round$2.0MCheque size, as they say$550K – $550KRounds led1 of 109Sole investor6 roundsExits1 from the portfolioMostly inUnited States, 70%
Pitch HAX

HAX highlights

  1. 01

    10 cheques in the last 12 months

  2. 02

    Mostly Venture and Seed: 76% of its rounds

  3. 03

    Sole investor in 6 rounds, median undisclosed

  4. 04

    1 exits from the portfolio

What they do

HAX is the world’s first and most active program built for pre-seed startups working at the intersection of science and engineering.From their own website
Type
Accelerator (from a list, unverified)
Cheque size
$550K – $550K as they say
Stages
Pre-seedSeedSeries ASeries BGrowth
Sectors
EnergyAdvanced ComputeTransportation
Based in
San Francisco, United States
Cold pitches
Accepted

The record

Every round we can evidence, newest first109 appearances

  1. 2026

    8 rounds

  2. Sept
    Mesa QuantumSeries A · US · HAX$12MWith 3 others
  3. Sept
    Nascent MaterialsGrant · US$2.3MWith 2 others
  4. Jul
    Arculus SolutionsSeed · US$2.0MWith 2 others
  5. Apr
    NOC EnergySeed · US · HAX$2.7MWith 4 others
  6. Apr
    DeepSpinGrant · DE$2.6MWith 4 others
  7. Mar
    PONSVenture · USUndisclosedWith 1 other
  8. Mar
    QneticSeed · US$5.0MWith 1 other
  9. Jan
    Mesa QuantumSeries A · US$11MWith 2 others
  10. 2025

    15 rounds

  11. Dec
    LIVIN farmsVenture · ATUndisclosedWith 2 others
  12. Nov
    VertiqVenture · USUndisclosedWith 4 others
  13. Oct
    Cephia AISeed · US$4.0MWith 1 other
  14. Oct
    RenewSeries A · US$12MWith 5 others
  15. Sept
    AegilysGrant · US$2.0MWith 3 others
  16. Aug
    Lura HealthVenture · USUndisclosedWith 3 others
  17. Jul
    YPLASMASeed · ES$2.5MWith 3 others
  18. Jul
    SkygaugeVenture · CAUndisclosedWith 4 others
  19. Jun
    Swap RoboticsVenture · CA$3.0MWith 1 other
  20. May
    HydrostasisSeries A · US$4.2MWith 2 others
  21. May
    FoodMarbleVenture · IEUndisclosedWith 4 others
  22. May
    NeurodeSeed · AU$10MWith 2 others
  23. Mar
    Nascent MaterialsSeed · US$2.3MWith 2 others
  24. Mar
    InnSight TechnologyVenture · USUndisclosedWith 3 others
  25. Feb
    OLIPre-seed · US$1.0MWith 2 others
  26. 2024

    11 rounds

  27. Dec
    AmatecGrant · US$240KWith 3 others
  28. Dec
    PixmovingVenture · USUndisclosedWith 1 other
  29. Dec
    silanaVenture · ATUndisclosedWith 1 other
  30. Dec
    Caldo Restaurant TechnologiesSeed · US$500KWith 3 others
  31. Dec
    Brightwater ToolsVenture · USUndisclosedWith 3 others
  32. Nov
    Blaze Energy TechnologiesVenture · USUndisclosedWith 2 others
  33. Oct
    FindsterVenture · USUndisclosedWith 1 other
  34. Oct
    GemmaVenture · USUndisclosedWith 2 others
  35. Sept
    Medical Devices CornerPre-seed · US$1.2MWith 2 others
  36. Jul
    LumenCacheVenture · USUndisclosedWith 3 others
  37. May
    Terra Bioindustries Inc.Venture · CAUndisclosedWith 2 others
  38. 2023

    9 rounds

  39. Dec
    RightbotSeed · US$6.3MWith 2 others
  40. Nov
    Kokoon TechnologyCrowdfunding · GB$27KWith 3 others
  41. Aug
    RobomartSeed · US$2.0MWith 3 others
  42. Jul
    RoboDeckPre-seed · IL$2.0MWith 1 other
  43. Jul
    Monogram Creative ConsoleVenture · CAUndisclosedWith 4 others
  44. Jul
    BartesianVenture · USUndisclosedWith 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 14 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 they claim to have backed

From their own portfolio page (on their website)

0 of 1 we have independently watched raise

Invest

Weaker than a round we watched, stronger than a list somebody sold us. A firm is far less willing to put a company on its own site that it never funded.

Exits from the portfolio

Companies it backed that were later bought or listed1 in all

ClarityBought by FundableUndisclosedFeb 2015

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 HAX. A count of rooms they were both in, not a relationship either has claimed.

SOSVVC firm100rounds togetherNational Science FoundationGovernment6rounds togetherNJEDAVC firm5rounds togetherEntrepreneur FirstAccelerator4rounds togetherCreative Destruction LabAccelerator3rounds togetherEIC AcceleratorGovernment3rounds togetherMassChallengeAccelerator3rounds togetherCleantech OpenAccelerator2rounds togetherHustle FundVC firm2rounds togetherInnovation WorksGovernment2rounds togetherJ2 VenturesVC firm2rounds togetherLD CapitalVC firm2rounds together

Recently backed

The latest companies HAX put money into.

Mesa Quantum$12M · Sept 2026Nascent Materials$2.3M · Sept 2026Arculus Solutions$2.0M · Jul 2026NOC Energy$2.7M · Apr 2026DeepSpin$2.6M · Apr 2026PONSMar 2026

Quick answers about HAX

What does HAX invest in?

HAX invests most often at Venture and Seed (76% of the rounds on record), in sectors such as Energy, Advanced Compute and Transportation.

How active is HAX?

109 investments on record, 10 of them in the last 12 months, and it led 1. The most recent was in Sept 2026.

What has HAX invested in recently?

Its most recent investments on record: Mesa Quantum (Series A, Sept 2026), Nascent Materials (Grant, Sept 2026) and Arculus Solutions (Seed, Jul 2026).

How big are HAX's cheques?

The median round it joins is $2.0M. It says it writes cheques of $550K to $550K.

Does HAX lead rounds?

Sometimes: it led 1 of its 109 investments on record (1%).

Where does HAX invest?

Most of the companies it backs are in the United States (70%), Canada (10%) and Austria (5%).

Is HAX investing now?

Yes: it is actively investing, with 10 investments in the last 12 months.

Who does HAX invest alongside?

Most often SOSV (100 rounds together), National Science Foundation (6 rounds together) and NJEDA (5 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