Monthly roundup · Construction · September 2026

Construction startup funding, September 2026: The Boring Co.'s $3.0B Growth leads 21 rounds

By Millionrounds ResearchPublished 1 October 2026Updated 28 October 2026

We read 21 equity rounds in Construction announced in September 2026, raising $4.7B between them: 6% of all the rounds we read that month and 12% of the money. The largest was The Boring Co.'s $3.0B Growth. The median seed round was $3.7M, against $5.2M over the last twelve months in Construction; at Series A it was $100M.

Equity rounds21in Construction, 19 with an amount
Raised$4.7Bacross those rounds
Lead named86%of rounds say who led
Share of the month6%of rounds; 12% of the money

The biggest rounds

  1. 1TThe Boring Co.Growth · United States$3.0B
  2. 2GroqGrowth · United States · led by Disruptive$750M
  3. 3EUCLYDSeries A · Netherlands · led by Innovation Industries, Samsung$231M
  4. 4telMAXGrowth · Canada · led by Hamilton Lane$215M
  5. 5VVerdaSeries B · Finland · led by Emergence Capital$189M
  6. 6Penelope HealthSeries A · United Kingdom · led by Thoreau$100M
  7. 7MiterSeries B · United States · led by Battery Ventures$40M
  8. 8WWintSeries D · led by Inven Capital, LIP Ventures$36M
  9. 9BRKZSeries B · Saudi Arabia · led by 500 Global, Wa'ed Ventures$31M
  10. 10Adaptive Real EstateSeries B · United States · led by Tidemark Capital$30M

Day by day

Equity rounds in Construction announced each day of September. The busiest day was 16 September, with 3.

1 September30 September

By stage, against the year

Each stage's median this month beside its twelve-month median: the sector's own where we hold enough rounds for a benchmark, otherwise the one across all sectors.

Pre-seed1$2.0Mthis month$2.0M12 months, all sectors
Seed8$3.7Mthis month$5.2M12 months here
Series A3$100Mthis month$24M12 months here
Series B4$36Mthis month$40M12 months here
Series D1$36Mthis month$150M12 months, all sectors
Growth4$750Mthis month$113M12 months, all sectors

Where

United States had the most Construction rounds this month.

Against the month

  • Rounds, Construction21
  • Rounds, all sectors357
  • Raised, Construction$4.7B
  • Raised, all sectors$39B

The whole of September 2026

Other sectors in September

195 roundsAI→51 roundsFintech→39 roundsHealthcare→30 roundsBig Data & Analytics→27 roundsBiotech→25 roundsRobotics→24 roundsCybersecurity→23 roundsHardware & Electronics→22 roundsEnterprise Software→21 roundsSoftware→21 roundsEnergy→20 roundsHealthtech→20 roundsSaaS→19 roundsLogistics→17 roundsManufacturing→16 roundsCleantech→14 roundsAerospace & Space→14 roundsDefence Tech→13 roundsTelecoms→13 roundsSemiconductors→13 roundsClimate Tech→11 roundsAutomotive & EVs→10 roundsCloud→