S3 Ventures

Venture capital · Austin, Texas

Founded in 2006, S3 Ventures is a venture firm based in Austin, Texas. 35 portfolio companies and 1 fund are on record.

AUM
$900.0M
Portfolio companies
35
Recorded deals
127
15 in last 12M
Last investment
—

S3 Ventures key facts

  • S3 Ventures is a venture capital firm based in Austin, Texas with 35 tracked portfolio companies.
  • Notable positions include Hydrolix, Mythic, Alleviant Medical.
  • S3 Ventures has 1 fund on record.
  • The team roster lists 13 people.

About S3 Ventures

Founded in 2006, S3 Ventures is a venture firm based in Austin, Texas. The firm seeks to invest in seed, series A, and series B-stage companies. The firm prefers to invest in the business technology, digital experiences, and healthcare technology sectors.

S3 Ventures portfolio at a glance

35 portfolio companies are on record for S3 Ventures, including Hydrolix, Mythic and Alleviant Medical.

28 of the 35 carry a recorded valuation.

S3 Ventures funds

1 fund is on record for S3 Ventures. The most recent is S3 Ventures VIII (2025 vintage).

S3 Ventures team

13 people are on record at S3 Ventures: 3 associates, 2 general partners, 1 partner, 1 managing partner and 6 others. Senior names include Brian Smith (Managing Director), Charlie Plauche (General Partner) and Eric Engineer (General Partner). 13 of them have a verified direct contact on file.

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Portfolio

35 companies · priced for members
CompanyValuationRole
Hydrolix▮▮
Mythic▮▮
Alleviant Medical▮▮
+ 32 more companies · all 35, priced and dated
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Funds

1 recorded
  • S3 Ventures VIII2025$250

$250 raised across the 1 fund that report a size

Team
13 people on record — 13 with verified contacts

Partners, principals, and the people who answer a pitch. Pro members reveal contacts with credits.

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Frequently asked about S3 Ventures

What companies does S3 Ventures invest in?
S3 Ventures has 35 recorded portfolio companies, including Hydrolix, Mythic, Alleviant Medical.
What is S3 Ventures's AUM?
S3 Ventures manages approximately $900.0M in assets.