DFX Intelligence

Robert Taylor Nelsen

Managing Director, Ceo, And Shareholderat Arch Venture Partners· IL

As of 2026-09-23 · this person's identity; each section below carries its own date

Current roles: 2
Investments attributed: 17
Board seats: 10

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As of 2026-09-23 · this person's identity; each section below carries its own date

7 additional roles and seats, 14 additional attributed investments

Every relationship, signal and contact on this record, with the source on each.

Includes 3 days of DFX Intelligence. Then $199/month unless canceled.

Nothing material in the last 365 days. Last change: 16 Oct 2024, Latest RIPPL Care Form D equity offering ($23M) on 16 Oct 2024.

Relationship network

11 connected entities17 observed investment records3 dated investment records shown here, 2020 to 2024

From the roles sources name this person in, the investments a source attributes to them, and the boards and funds Form D names them on.

Some relationships on this record are counted rather than named here. They open with the full profile.

Click any name or line for the investment records and sources behind it. Line weight is investment records together; dashed lines are inferred.

Reading the network

Organization
Company

Venture relationships are not scored. Each line names its claim: a round led or joined, a board seat or a filing that names the firm, a listing on a portfolio page (dated by when DFX saw it, never by when the investment was made), a disclosed LP commitment, or a co-investor pair counted from observed participations. Observed means a named source says so; Derived means DFX counted it from observed rows; Inferred means a match that may be wrong.

Darker lines were active in the last 24 months or are current; lighter lines are older or undated.

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Which companies and boards is Robert Taylor Nelsen connected to?

How am I connected?

Name your firm, a company or a person, and DFX finds the published routes to Robert Taylor Nelsen: a shared portfolio company or board, a prior employer, a co-investor, a shared LP or service provider. Every step is a filed or published record with its source; none is a guess about who knows whom.

See how you connect to Robert Taylor Nelsen

Includes 3 days of DFX Intelligence. Then $199/month unless canceled.

Drawing the relationship network…

Roles

1 current, 0 past

Arch Venture Partners Managing Director, Ceo, And Shareholder
Jun 1, 2001 to present · “Schedule A: NELSEN, ROBERT, TAYLOR, MANAGING DIRECTOR, CEO, AND SHAREHOLDER, since 06/2001, ownership C, control person Y”
Fact Form ADV

Investments attributed to this person

Company	Round	Investor	Attribution	Date	Source
RIPPL Care, Inc.	Form D equity offering · $23.0M	Arch Venture Partners	strongly supported · board	Oct 16, 2024	Inference sec.gov
National Resilience	Form D equity offering · $755M	Arch Venture Partners	strongly supported · board	Jan 6, 2021	Inference sec.gov
insitro	Form D equity offering · $143M	Arch Venture Partners	strongly supported · board	May 27, 2020	Inference sec.gov

Board seats and vehicles

10 boards, 0 vehicles

RIPPL Care, Inc. board seat on a deal Oct 16, 2024 Inference
National Resilience board seat on a deal Jan 6, 2021 Inference
insitro board seat on a deal May 27, 2020 Inference

Timeline

4 dated entries: events, attributed deals, board seats and role changes

Oct 16, 2024
Form D equity offering in RIPPL Care, Inc. (Arch Venture Partners)
Attributed investment Inference RIPPL Care, Inc. Form D
Jan 6, 2021
Form D equity offering in National Resilience (Arch Venture Partners)
Attributed investment Inference National Resilience Form D
May 27, 2020
Form D equity offering in insitro (Arch Venture Partners)
Attributed investment Inference insitro Form D
Jun 1, 2001
Joined Arch Venture Partners as Managing Director, Ceo, And Shareholder
Role began Fact Arch Venture Partners Form ADV