DFX Intelligence

Dennis Brian Phelps

Managing Directorat Institutional Venture Management Xiv, LLC· CA

As of 2026-09-25 · this person's identity; each section below carries its own date

Current roles: 23
Investments attributed: 2
Board seats: 1

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As of 2026-09-25 · this person's identity; each section below carries its own date

16 additional roles and seats

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: 8 Mar 2016, Latest Zefr Form D equity offering ($5M) on 8 Mar 2016.

Relationship network

11 connected entities2 observed investment recordsinvestment records 2014 to 2016

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

›How strength and recency are read

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.

Ask DFX about this network

Which companies and boards is Dennis Brian Phelps connected to?

How am I connected?

Name your firm, a company or a person, and DFX finds the published routes to Dennis Brian Phelps: 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 Dennis Brian Phelps

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

Drawing the relationship network…

Roles

19 current, 0 past

Institutional Venture Partners Uk LLP Manager Of Institutional Venture Management Xiv, Llc
Mar 1, 2023 to present · “Schedule A: PHELPS, DENNIS, BRIAN, MANAGER OF INSTITUTIONAL VENTURE MANAGEMENT XIV, LLC, since 03/2023, ownership F, control person Y”
Fact Form ADV
Institutional Venture Management Xviii, LLC Trustee
Oct 1, 2022 to present · “Schedule A: PHELPS, DENNIS, BRIAN, TRUSTEE, since 10/2022, ownership F, control person N”
Fact Form ADV
Institutional Venture Management Xviii, LLC Managing Director
Oct 1, 2022 to present · “Schedule A: PHELPS, DENNIS, BRIAN, MANAGING DIRECTOR, since 10/2022, ownership NA, control person Y”
Fact Form ADV

Investments attributed to this person

Company	Round	Investor	Attribution	Date	Source
Zefr	Form D equity offering · $5.0M	Institutional Venture Management X, LLC	strongly supported · board	Mar 8, 2016	Inference sec.gov
Zefr	Form D equity offering · $30.0M	Institutional Venture Management X, LLC	strongly supported · board	Feb 28, 2014	Inference sec.gov

Board seats and vehicles

1 board, 0 vehicles

Zefr board seat on a deal Mar 8, 2016 Inference

Timeline

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

Mar 1, 2023
Joined Institutional Venture Partners Uk LLP as Manager Of Institutional Venture Management Xiv, Llc
Role began Fact Institutional Venture Partners Uk LLP Form ADV
Oct 1, 2022
Joined Institutional Venture Management Xviii, LLC as Trustee
Role began Fact Institutional Venture Management Xviii, LLC Form ADV
Mar 8, 2016
Form D equity offering in Zefr (Institutional Venture Management X, LLC)
Attributed investment Inference Zefr Form D
Oct 1, 2014
Dennis Brian Phelps joined Schedule A of Institutional Venture Management Xiv, LLC as Trustee
Person joined Fact Institutional Venture Management Xiv, LLC Form ADV
Oct 1, 2014
Dennis Brian Phelps joined Schedule A of Institutional Venture Management X, LLC as Trustee
Person joined Fact Institutional Venture Management X, LLC Form ADV

Full timeline · 9 entriesnewest first

Mar 1, 2023
Joined Institutional Venture Partners Uk LLP as Manager Of Institutional Venture Management Xiv, Llc
Role began Fact Institutional Venture Partners Uk LLP Form ADV
Oct 1, 2022
Joined Institutional Venture Management Xviii, LLC as Trustee
Role began Fact Institutional Venture Management Xviii, LLC Form ADV
Mar 8, 2016
Form D equity offering in Zefr (Institutional Venture Management X, LLC)
Attributed investment Inference Zefr Form D
Oct 1, 2014
Dennis Brian Phelps joined Schedule A of Institutional Venture Management Xiv, LLC as Trustee
Person joined Fact Institutional Venture Management Xiv, LLC Form ADV
Oct 1, 2014
Dennis Brian Phelps joined Schedule A of Institutional Venture Management X, LLC as Trustee
Person joined Fact Institutional Venture Management X, LLC Form ADV
Oct 1, 2014
Dennis Brian Phelps joined Schedule A of Institutional Venture Management Xi, LLC as Trustee
Person joined Fact Institutional Venture Management Xi, LLC Form ADV
Oct 1, 2014
Dennis Brian Phelps joined Schedule A of Institutional Venture Management Xii,llc as Trustee
Person joined Fact Institutional Venture Management Xii,llc Form ADV
Oct 1, 2014
Dennis Brian Phelps joined Schedule A of Institutional Venture Management Xiii, LLC as Trustee
Person joined Fact Institutional Venture Management Xiii, LLC Form ADV
Feb 28, 2014
Form D equity offering in Zefr (Institutional Venture Management X, LLC)
Attributed investment Inference Zefr Form D

Record history

5 dated events on the change ledger, latest event first

Person joined
2014-10-01source on record
Person joined
2014-10-01source on record
Person joined
2014-10-01source on record

+2 more changes on this record's ledger

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The ledger records every merge, rename and reclassification this record went through and the dated filings observed on it, so the identity on this page can be traced to the records it was built from. The ledger's own sentences name other records, so they show with the names.