Monthly roundup · Telecoms · September 2026

Telecoms startup funding, September 2026: Open Cosmos's $346M Growth leads 13 rounds

By Millionrounds ResearchPublished 1 October 2026Updated 28 October 2026

We read 13 equity rounds in Telecoms announced in September 2026, raising $1.3B between them: 4% of all the rounds we read that month and 3% of the money. The largest was Open Cosmos's $346M Growth, led by ETF Partners and Trill Impact. The median seed round was $3.1M, against $5.5M over the last twelve months across all sectors; at Series A it was $22M. NATO Innovation Fund (NIF) led the most rounds, with 2.

Equity rounds13in Telecoms, 13 with an amount
Raised$1.3Bacross those rounds
Lead named85%of rounds say who led
Share of the month4%of rounds; 3% of the money

The biggest rounds

  1. 1Open CosmosGrowth · United Kingdom · led by ETF Partners, Trill Impact$346M
  2. 2telMAXGrowth · Canada · led by Hamilton Lane$215M
  3. 3CCornelisSeries C · United States · led by IAG Capital Partners$205M
  4. 4Hubble NetworkSeries C · United States · led by Smith Point Capital$200M
  5. 5iPronicsSeries B · Spain · led by Maverick Silicon, Light Street Capital$125M
  6. 6Delos DataSeries A · United States$100M
  7. 7HHuskeysSeries A · United States · led by Blackstone Innovations Investments$27M
  8. 8TUSK ICSeries A · Belgium · led by Matterwave Ventures$17M
  9. 9TERASiSeed · Sweden · led by NATO Innovation Fund (NIF), Join Capital$13M
  10. 10Laki PowerSeries A · Iceland · led by NATO Innovation Fund (NIF)$6.9M

Day by day

Equity rounds in Telecoms announced each day of September. The busiest day was 2 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.

Seed4$3.1Mthis month$5.5M12 months, all sectors
Series A4$22Mthis month$20M12 months, all sectors
Series B1$125Mthis month$50M12 months, all sectors
Series C2$203Mthis month$100M12 months, all sectors
Growth2$281Mthis month$113M12 months, all sectors

The most active leads

Firms that led two or more of the month's rounds in Telecoms.

Where

United States had the most Telecoms rounds this month.

Against the month

  • Rounds, Telecoms13
  • Rounds, all sectors357
  • Raised, Telecoms$1.3B
  • 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→21 roundsConstruction→20 roundsHealthtech→20 roundsSaaS→19 roundsLogistics→17 roundsManufacturing→16 roundsCleantech→14 roundsAerospace & Space→14 roundsDefence Tech→13 roundsSemiconductors→13 roundsClimate Tech→11 roundsAutomotive & EVs→10 roundsCloud→