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LEDGER2026 YTD $21.4B253 roundslast Oct 20, 2026

Seed

Rein Security raises $8M Seed

$8M

By Israel Rounds desk. Edited by Eliran Yihye. Published . Updated .

Rein Security raised $8M in a seed round1, announced Jan 28, 20261, led by Glilot Capital Partners1.

Rein Security has raised $33M across 2 recorded rounds.2,1

Lead investor

  • Glilot Capital Partners

Rein Security funding path

Funding rounds raised by Rein Security, oldest to newest$12.5M$25MSeed, Jan 28, 2026: $8M$8MSeedSeries A, Oct 8, 2026: $25M$25MA

Rein Security funding history

2 rounds

Funding rounds raised by Rein Security, newest first
RoundAnnouncedAmountLead investors
Series AOct 8, 2026$25MGlilot Capital, Sienna Venture Capital
SeedJan 28, 2026$8MGlilot Capital Partners
Total raised$33M

Sources

  1. 1CTech, Jan 28, 2026. “8200 alumni raise $8 million Seed round for Rein Security as AppSec faces the AI era”
  2. 2Calcalist (CTech), Oct 8, 2026. “Rein Security raises $25 million Series A as companies struggle to control their AI agents”

How much did Rein Security raise in its Seed?

Rein Security raised $8M in its Seed, announced Jan 28, 2026.

Who led Rein Security’s Seed?

The round was led by Glilot Capital Partners.

Which investors took part in Rein Security’s Seed?

Participants: Glilot Capital Partners.

How much has Rein Security raised in total?

Rein Security has raised $33M across 2 recorded rounds.