United States · 
Who invested in Aehr Test Systems?
Aehr Test Systems's investors include Summit Partners.
19851989199319972001200520092013
?Round$1.2MSeed$2.6MVenture$4.1MDebtUnited States · Funded startup
Who invested in Aehr Test Systems
4 rounds we have observed, with the one investor named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.
Funding summaryUpdated 26 Oct 2026
$7.9Mraised across 4 rounds since 1985, from 4 sources
$1.2MSeed$2.6MVenture$4.1MDebt
- Latest round
- Debt, $4.1MApr 2015
- Step-upi
- 1.6×
- Investors
- 1
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Round Sept 1985
- Biggest round
- $4.1M Debt · Apr 2015
- Usual gap between rounds
- 20 months the median of 3
The rounds
- Apr 2015Debt$4.1M
No investor was named in the report.
From a historical funding recordSEC filing: $4.1M sold, first sale Apr 2015
- Dec 2014Venture$2.6M
No investor was named in the report.
From a historical funding recordSEC filing: $2.6M sold, first sale Nov 2014
- Mar 2013Seed$1.2M
No investor was named in the report.
Reported by sec.govSEC filing: $1.2M sold, first sale Mar 2013
- Sept 1985
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Quick answers about Aehr Test Systems
How much has Aehr Test Systems raised?
Aehr Test Systems has raised $7.9M across 4 rounds since 1985. One round did not disclose an amount, so the total is a floor.
When did Aehr Test Systems last raise?
Aehr Test Systems's most recent round was a Debt of $4.1M in Apr 2015.
What was Aehr Test Systems's biggest round?
Its most recent round, $4.1M in Apr 2015, is also its largest on record.
Who backed Aehr Test Systems first?
Aehr Test Systems's first round on record, in Sept 1985, was backed by Summit Partners.
What stage is Aehr Test Systems at?
Aehr Test Systems's latest named round is a Debt, in Apr 2015.
Where is Aehr Test Systems based?
Aehr Test Systems is based in the United States.
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