AltMountain

Side Door Ventures III, LP

Seattle, WA · CIK 1978748
Emerging

Side Door Ventures III, LP is a venture capital fund based in Seattle, Washington. According to its most recent Form D, filed Jul 2, 2025, it has sold $17,080,000 of interests to 21 investors since its first sale in May 2023. The minimum investment it accepts from an outside investor is $200,000. It relies on the Section 3(c)(1) exclusion, which limits it to 100 beneficial owners, typically accredited investors. The offering uses Rule 506(b), which does not permit general solicitation. Based on its first sale date and the amount raised, AltMountain classifies it as an emerging manager. Related persons named in the filing include Andrew Batey; SDV GP III, LLC.

Total raised
$17,080,000Cumulative sales reported on Form D
Investors
21
First sale
May 9, 2023
Minimum investment
$200,000
Who can invest
Accredited investorsSection 3(c)(1): up to 100 beneficial owners
Offering exemption
Rule 506(b)No general advertising
Key people and entities
Andrew Batey; SDV GP III, LLC
Latest Form D
Jul 2, 2025

From SEC filings, not verified. This page republishes the fund's Form D as filed. It is not an offer, solicitation or recommendation, and AltMountain has not reviewed the fund. “Raised” is cumulative sales, not current assets or performance. Returns are not part of SEC filings. Private funds are speculative, illiquid and generally limited to accredited investors or qualified purchasers. Full disclosures · Request a correction

Questions about Side Door Ventures III, LP

What is the minimum investment for Side Door Ventures III, LP?

According to its latest Form D, filed Jul 2, 2025, the minimum investment Side Door Ventures III, LP accepts from an outside investor is $200,000.

Who can invest in Side Door Ventures III, LP?

Side Door Ventures III, LP is generally open only to accredited investors, and it may have no more than 100 beneficial owners because it relies on Section 3(c)(1). It uses Rule 506(b), which does not allow general advertising.

How much has Side Door Ventures III, LP raised?

Side Door Ventures III, LP reports $17,080,000 sold from 21 investors on its Form D filed Jul 2, 2025. This is cumulative sales since the offering began, not current assets or performance.

Where is Side Door Ventures III, LP based?

Side Door Ventures III, LP is based in Seattle, Washington.

When did Side Door Ventures III, LP launch?

Side Door Ventures III, LP reports its first sale in May 2023, which makes it an emerging manager by AltMountain's definition (first sale in 2021 or later and under $50 million raised).

Size compared with every venture capital fund

Raised more than 99% of the 5,568 venture capital funds based in Washington, and more than 91% of all 15,160 that report sales.

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