Danielle Morrill
InvestorFounderFounder at Firstparty Labs · Founder/CEO at Mattermark · Former Partner at xfactor ventures
San Francisco, California
Writes $100K – $150K checks · typically $125K
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About
Danielle Morrill is co-founder and CEO of Mattermark, a data platform that helps venture capital firms identify signals of promising startups. She previously co-founded and led Referly Inc., served as Director of Marketing at Twilio, and held roles including community manager at Pelago, Editor in Chief at Seattle 2.0, and business analyst at Expeditors International.
Invests in
Data & Infrastructure
Founder at Firstparty Labs
Founder/CEO at MattermarkYC S12
Intro paths
Danielle went through Y Combinator (Summer 2012) — any YC alum in your network can reach them through the YC community.
In turn, Danielle can intro founders to Mattermark's investors below.
Mattermark's investors · 15
Co-founders at Mattermark


Experience
- GroupthinkCofounder & CEOcurrent2024 — present
- Morrill Coaching LLCCertified Professional Coachcurrent2020 — present
- Statewide Internet Portal Authority | SIPABoard Membercurrent2021 — present
- First Party LabsCTO & Cofounder2021 — 2024
- GitLabSenior Director, Inbound Marketing2020 — 2021
- GitLabInterim Senior Director, Corporate Marketing2020
- GitLabGeneral Manager, Meltano2019 — 2020
- XFactor VenturesInvesting Partner2017 — 2021
- FullContact Inc.Vice President, Product2017 — 2018
- MattermarkCEO & Cofounder2013 — 2017
- ReferlyCEO & Cofounder2012 — 2013
- Twilio Inc.Head of Marketing2009 — 2012San Francisco, California, United States
- PelagoCommunity Manager / Data Team Lead2007 — 2009Seattle, Washington, United States
- ExpeditorsBusiness Process Analyst2005 — 2007SeaTac, Washington, United States
Skills & more
+12 more
Cross-functional Team LeadershipMarketing StrategyFundraisingSoftware as a Service (SaaS)Sales ManagementAwesomenessStart-upsSocial Media MarketingData AnalysisAnalyticsDigital MarketingOnline Marketing- Member — International Coaching Federation
- Certified Hudson Institute Coach — Hudson Institute of Coaching
- Facilitation Skills for Managers and Leaders — LinkedIn
From Danielle's professional profile.
Investments
Investor
Atomos SpaceAutocodeBitnamiBoom SupersonicBountifulClara LabsEnzymeEstimote, Inc.HollowayLookSharpTastemakers Africa
Per curated public sources.
Network10
Investors connected to Danielle in public investor directories — a warm-intro map.
Frequently asked questions
- Who is Danielle Morrill?
- Danielle Morrill is co-founder and CEO of Mattermark, a data platform that helps venture capital firms identify signals of promising startups. She previously co-founded and led Referly Inc., served as Director of Marketing at Twilio, and held roles including community manager at Pelago, Editor in Chief at Seattle 2.0, and business analyst at Expeditors International.
- Where does Danielle Morrill work?
- Danielle Morrill is Founder of Firstparty Labs and Founder/CEO at Mattermark.
- What does Danielle Morrill invest in?
- Danielle Morrill invests in Data & Infrastructure.
- What check size does Danielle Morrill write?
- Danielle Morrill typically writes checks of $100K – $150K.
- What companies did Danielle Morrill found?
- Danielle Morrill founded Firstparty Labs, Mattermark.
- What companies has Danielle Morrill invested in?
- Investments tracked here include Atomos Space, Autocode, Bitnami, Boom Supersonic, Bountiful, Clara Labs, Enzyme, Estimote, Inc., Holloway, LookSharp, Tastemakers Africa.
- Where did Danielle Morrill go to school?
- Danielle Morrill studied at Y Combinator.
Founder mafias
Y Combinator mafia10,601
Also came through, then founded or led a company.
Twilio mafia27
Also came through, then founded or led a company.
xfactor ventures mafia23
Also came through, then founded or led a company.
FullContact mafia9
Also came through, then founded or led a company.
Same school
Also attended Y Combinator2,000
+ 1,994 more
Shared employers
Also worked at GitLab30
+ 24 more
Also worked at XFactor Ventures19
+ 13 more
































































