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LEDGER2026 YTD $31.7B304 roundslast Nov 5, 2026

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  3. Rein Security raises $25M Series A

Series ATuesday, November 3, 2026

Rein Security raises $25M Series A

$25M

By Israel Rounds desk. Edited by Eliran Yihye. Published Tuesday, November 3, 2026. Updated Wednesday, November 4, 2026.

Rein Security raised $25M in a Series A round1, announced Nov 3, 20261.

Rein Security has raised $58M across 3 recorded rounds.1,2,3

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$25MASeries A, Nov 3, 2026: $25M$25MA

Rein Security funding history

3 rounds

Funding rounds raised by Rein Security, newest first
RoundAnnouncedAmountLead investors
Series ANov 3, 2026$25M
Series AOct 8, 2026$25MGlilot Capital, Sienna Venture Capital
SeedJan 28, 2026$8MGlilot Capital Partners
Total raised$58M

Which other Israeli startups raised in the same sector or with the same lead?

  • Clutch Security raises $20M Series ANov 5, 2026
  • Clutch Security raises $8.5M SeedNov 5, 2026
  • Explorium raises $75M Series CNov 4, 2026
  • Explorium raises $31M Series BNov 4, 2026
  • Explorium raises $15.5M Series ANov 4, 2026
  • Explorium raises $3.6M SeedNov 4, 2026

Sources

  1. 1Israel Defense, Nov 3, 2026. “Israeli Startups Raised at Least $872 Million in October”
  2. 2Calcalist (CTech), Oct 8, 2026. “Rein Security raises $25 million Series A as companies struggle to control their AI agents”
  3. 3CTech, Jan 28, 2026. “8200 alumni raise $8 million Seed round for Rein Security as AppSec faces the AI era”

Raised this round? Get your announcement featured

How much did Rein Security raise in its Series A?

Rein Security raised $25M in its Series A, announced Nov 3, 2026.

How much has Rein Security raised in total?

Rein Security has raised $58M across 3 recorded rounds.

Company
Rein Security
Stage
Series A
Amount
$25,000,000
Announced
Nov 3, 2026
Sectors
cybersecurity, AI agents, AI, artificial intelligence
Headquarters
Tel Aviv
  • Rein Security profile, founders and investors
  • Israeli startup news on Nov 3, 2026

Updated Nov 3, 2026

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Israel Rounds

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