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Majestic Labs

San Francisco, US · Founded 2023 · 57 employees on LinkedIn · 7 known investors

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Majestic Labs builds specialized compute systems aimed at solving the "Memory Wall" and the power problem of AI infrastructure, drawing on the team's experience in custom silicon and system architecture. The company develops semiconductor and AI hardware technology.

AI & Machine LearningDeep TechHardwareSemiconductors

Founders & leadership

Majestic Labs was founded in 2023 by Masumi Reynders, Ofer Shacham, Shahriar (Sha) Rabii, and Mark Shacham.

MRMasumi Reynders
Masumi ReyndersCo-Founder and COOCo-founder and COO of Majestic Labs, which develops semiconductor and AI hardware technology focused on memory and power efficiency for AI infrastructure.
OSOfer Shacham
Ofer ShachamCo-Founder and CEOOfer Shacham holds a PhD in Electrical Engineering from Stanford and has worked on system-on-chip architecture, processor and memory system design, and high-performance low-power hardware and software for imaging and machine learning applications. He previously served five years in an elite unit of the Israeli Navy.
S(Shahriar (Sha) Rabii
Shahriar (Sha) RabiiCo-Founder and President
MS
Mark ShachamCo-founder

Investors · 7

Lux Capitallisted by Lux CapitalNew York · $100K – $100M

How we know: Lux Capital's portfolio page · funding news · Not right? Tell us

QP Ventureslisted by QP Ventures

How we know: QP Ventures's portfolio page · funding news · Not right? Tell us

Tal Ventureslisted by Tal VenturesTel Aviv

How we know: Tal Ventures's portfolio page · funding news · the VCSheet dataset · Not right? Tell us

Upfront Ventureslisted by Upfront VenturesLos Angeles · $1M – $10M

How we know: Upfront Ventures's portfolio page · open dataset · 5k.vc investor directory · Not right? Tell us

Grove VenturesreportedTel Aviv-Yafo

How we know: funding news · open dataset · 5k.vc investor directory · Not right? Tell us

PIPELINE CAPITAL PARTNERSreportedLas Vegas

How we know: the VCSheet dataset · Not right? Tell us

Funding

SEC filings, press & company announcements

$100M disclosed across 1 of 2 rounds · 2025–2026

Source: company announcements and press reports — follow each round's link for the claim.

In the news

Majestic Labs Raises $100M in Fundingfinsmes.com · Nov 2025

Frequently asked questions

What does Majestic Labs do?
Majestic Labs builds specialized compute systems aimed at solving the "Memory Wall" and the power problem of AI infrastructure, drawing on the team's experience in custom silicon and system architecture. The company develops semiconductor and AI hardware technology.
Who founded Majestic Labs?
Majestic Labs was founded by Masumi Reynders, Ofer Shacham, Shahriar (Sha) Rabii, Mark Shacham in 2023.
Who are Majestic Labs's investors?
Majestic Labs's investors include Hetz Ventures, Lux Capital, QP Ventures, Tal Ventures, Upfront Ventures, Grove Ventures, PIPELINE CAPITAL PARTNERS.
How much funding has Majestic Labs raised?
Majestic Labs has disclosed $100M raised across 1 of its 2 known rounds.
Where is Majestic Labs headquartered?
Majestic Labs is headquartered in San Francisco, US.