Investing Profile

Walter Winshall

AngelInvestor
Founder of Collaborative Seed and Growth Partners
Boston, Massachusetts
Photo of Walter Winshall, Angel at Collaborative Seed & Growth Partners

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$10K - $500K
$100K
49
CompanyStageDateRound SizeTotal Raised
RISE Robotics
Series AApr 2025$2M
SeedAug 2012$2M
$7M
Co-investors: Reed Sturtevant (The Engine), Bob Mason (Argonautic Ventures), Adam Draper (Boost VC), Michael Dornbrook (Speedy Packets Inc.)
Stocksnips
SeedDec 2022$430K
$2.1M
Co-investors: Ven Raju (Innovation Works), Peter Erin (Riverfront Ventures)
Avanlee Care
SeedFeb 2021
Co-investors: Esther Dyson (HealthWorldWeb LLC), Susan Solinsky
Rheaply
SeedMar 2020$3M
$33M
Co-investors: Bradley Horowitz (Google Ventures), Brandon Middaugh (Microsoft), Mike Fitzgerald (High Alpha), Steve Case (Revolution), John Doerr (Kleiner Perkins)
StoryFit
Series ADec 2019
$7.8M
Co-investors: Anton Simunovic (Alumni Ventures ), Tim Schigel (Refinery Ventures), Gregory Baker (Bascom Ventures), Dan Conner (Ascend Venture Capital), Marco A. Casas
Circle
Pre SeedDec 2018$800K
$760M
Co-investors: David Orfao (General Catalyst), Sam Bankman-Fried (FTX Ventures), Hemant Taneja (General Catalyst), David Eckstein (Sequoia Capital), Zachary Sims (Bowery Capital), Lorenzo Thione (Gaingels), Scott Weiss (Andreessen Horowitz), Keith Rabois (Khosla Ventures), Ron Conway (SV Angel), Saar Gur (CRV), Jenny Fielding (Everywhere Ventures (The Fund)), Scott Hartley (Everywhere Ventures (The Fund)), Anna Barber (Everywhere Ventures (The Fund)), Barry Silbert (Digital Currency Group), Jamie Goldstein (Pillar VC), Esther Dyson (HealthWorldWeb LLC), Ziv Reichert (LocalGlobe), Terrence Rohan (Otherwise Fund), Raj Date (Fenway Summer), Ankur Nagpal (Vibe Capital), Nicholas Chirls (Notation Capital), Mark Goldstein (Builders VC), Clifford Holekamp (Cultivation Capital), Scott Belsky (A24), Ronald Conway Sr. (NewCo), Yuri Milner (DST Global), Brian Pokorny (SV Angel LLC), Ashton Kutcher (Sound Ventures), David Sacks (Craft Ventures), Shervin Pishevar (ACME Capital), Paul Buchheit (Y Combinator), Naval Ravikant (Sm4rt Predictive Systems), David Ambrose (Steadfast Venture Capital), Matthew Ziskie (Bungalow Capital), Sahin Boydas (Angel investor), J J (GreaterGoodSociety), Glenn Hutchins (North Island Ventures), Mathilde Collin, Sahil Lavingia, Sam Palmisano
Immersed
Pre SeedDec 2017$340K
$17M
Co-investors: Brian Luerssen (LongJump VC), David Murray-Hundley (Pario Ventures), Ozzy Akay, Joshua Webster
Mainstay
SeedDec 2016$250K
Convertible NoteAug 2016$730K
$23M
Co-investors: Matthew Greenfield (Rethink Education), Esteban Sosnik (Reach Capital), Kevin Talbot (Relay Ventures), Charlie Cheever, Christopher Gabrieli