COMPANY PROFILE · UPDATED 18 NOV 2025

Lightmatter

Lightmatter, Inc. operates as a computer hardware company. The Company provides hardware solutions to create computing platform purpose-built for artificial intelligence. Lightmatter serves clients in the United States.

Boston, MA · Mountain View, CA

lightmatter.co ↗

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Founded: 2017
Headcount: 162
Open roles: 68
Last raised: Series D

LOCATIONS

Where they work

Lightmatter offices

Boston, MA61 Chatham Street 5th Floor
Mountain View, CA

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FUNDING

Capital raised

Total raised

$822,000,000

Investors

Spark Capital Gv AXIAL Partners Bossa Nova Investimentos Eastward Capital Partners Fidelity GETTYLAB Hewlett Packard Enterprise Lockheed Martin Ventures Matrix SBXi SIP Global Partners T. Rowe Price Trajectory Ventures Viking Global Investors

Funding rounds

Series D
T. Rowe Price, Fidelity, GV, Bossa Nova Investimentos
$400MOct 15, 2024
Series C
GV, Viking Global Investors, SIP Global Partners, Eastward Capital Partners, AXIAL Partners
$155MDec 18, 2023
Series C
Viking Global Investors, SIP Global Partners, Fidelity, GV, Hewlett Packard Enterprise, Trajectory Ventures
$154MMay 30, 2023
Series B
Viking Global Investors, SIP Global Partners, GV, Spark Capital, Hewlett Packard Enterprise, Matrix, GETTYLAB, Lockheed Martin Ventures, SBXi
$80MApr 5, 2021
Series A
GV, Matrix, Spark Capital
$22MFeb 25, 2019
Series A
Matrix, Spark Capital
$11MFeb 4, 2018

Funding data via Diffbot, SEC EDGAR filings and company announcements — a round from a filing or announcement links to it

TECH STACK

How Lightmatter builds

Extracted from Lightmatter’s job postings we’ve tracked

×N is how many of Lightmatter’s open roles mention that technology.

Programming Languages

Python×41 MATLAB×14 Verilog×9 C++×8 Java×3 SystemVerilog×3 C/C++×2

DevOps & Infrastructure

Git×7 GDB×4 CMake×3 Linux×3

Other Software & Platforms

Foundry×7 ANSYS×4 Ansys HFSS×3

Frameworks & Libraries

Metal×4 NumPy×4 Universal Verification Methodology×3

Design Tools

SolidWorks×4 Altium Designer×3

Collaboration & Productivity

Jira×2

OPEN ROLES

Hiring at Lightmatter

View all 68 open roles →

LEADERSHIP

Founders & key people

Thomas Graham

COO at Lightmatter

Lightmatter

Greg Hausheer

Ben Beecher

Nicholas Harris

CEO at Lightmatter

LightmatterMassachusetts Institute of Technology (MIT)Micron TechnologyBerkeley YeastDone.University of IdahoMassachusetts Institute of Technology (MIT)Boise State University

Darius Bunandar

Chief Officer at Lightmatter

LightmatterMassachusetts Institute of Technology (MIT)Sandia National LaboratoriesCaltechBakerRiskUniversität WürzburgMassachusetts Institute of Technology (MIT)The University of Texas at Austin

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