Form D · Other Investment Fund

Proteus Master Fund III, LLC

Indianapolis, IN · CIK 0001816191

Offering snapshot reported May 21, 2026 · SEC filing

Reported sold: $32.8M
Investors reported: 4
Minimum accepted: $0
First sale: Apr 1, 2020

Fundraising history

Reported sold

Dates are filing dates, not cash receipt dates. Decreases are reported revisions, not evidence of withdrawals. Separate offering histories are not added together.

What changed?

Latest filing versus its linked predecessor, where available.

Reported sold$23,750,375 → $32,792,416

Filing history

Scroll to see all columns →

Filed	Filing type	Reported sold	Change vs linked filing	Investors	Source
May 21, 2026	Amendment	$32,792,416	$9,042,041vs Nov 13, 2025	4	SEC filing
Nov 13, 2025	Amendment	$23,750,375	$0vs Oct 8, 2025	4	SEC filing
Oct 8, 2025	Amendment	$23,750,375	-$7,142,041vs Oct 10, 2024	4	SEC filing
Oct 10, 2024	Amendment	$30,892,416	$5,056,462vs Oct 16, 2023	3	SEC filing
Oct 16, 2023	Initial	$25,835,954	No comparison	3	SEC filing
Aug 22, 2022	Initial	$26,044,694	No comparison	2	SEC filing
Aug 25, 2021	Amendment	$21,271,866	No comparison	Not reported	SEC filing
Jun 26, 2020	Initial	$500,000	No comparison	1	SEC filing

Offering details

Securities: Pooled investment fund
Exemptions: 06b, 3C, 3C.7
Duration over one year: Yes
Business combination: No

Sales commissions: $0
Finders' fees: $0
Form D file number: 021-494839

Source: Form D, filed May 21, 2026. Minimum accepted may differ from a standard advertised minimum.

Fund connections

The linked fund shows its most recently reported ADV details.

Matched by reported Form D file number

PROTEUS MASTER FUND III, LLC

Investment adviser: PROTEUS, LLC

Gross asset value: $21.3M
Beneficial owners: 46
ADV minimum commitment: $50K

Reported in Form ADV on Jul 29, 2026. Fund assets and beneficial owners measure different things from Form D sales and investors.

Service providers

Fund administrator PROTEUS FINANCIAL SOLUTIONS INDIANAPOLIS, Indiana, United States Investor statements: Yes (provided to all investors) Related to adviser: Yes

Auditor KATZ SAPPER & MILLER INDIANAPOLIS, Indiana, United States

Custodian CIBC BANK USA CHICAGO, Illinois, United States Related to adviser: No

Provider details

Annual audit: Yes
Prime brokers: No
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: No

KATZ SAPPER & MILLER
PCAOB 2804

CIBC BANK USA
LEI B4TYDEB6GKMZO031MB27

Filing source

Form ADV 2121935 · Jul 29, 2026 · Schedule D 7.B.(1), fund 805-3817061804

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

Related funds

Funds whose names form a numbered series with this one and that share its city or the name of a related person. Form D does not state how these funds are related.

Fund	Latest Form D	Reported sold	Investors
Proteus Master Fund I, LLC	May 20, 2026	$32,715,693	7
Proteus Master Fund II, LLC	May 21, 2026	$53,684,809	7
Proteus Master Fund III, LLC (this fund)	May 21, 2026	$32,792,416	4

People & organizations

Current and past Form D appearances. These existing records do not establish a person's current role or uniquely identify them across issuers.

People and organizations reported in Form D filings
Name	Reported role
Cheryl Ackerman	Director, Executive
Jason Brown	Director, Executive, Promoter
Molly Herendeen	Executive
Anya Janeway	Executive
Eric Knauss	Director, Executive, Promoter
Ryan Laughon	Director, Executive, Promoter
Matthew Reynolds	Director, Executive, Promoter

Issuer details

Industry: Pooled Investment Fund (See others in industry)

Address:

510 E. 96 Th Street Suite 400
Indianapolis, IN, 46240