3x5 Partners
Venture capitalPortland · 2 people tracked
Find your way into 3x5 Partners
1 people in our graph share verified history with the 3x5 Partners team — schools, employers, funds. One of them is your warm intro.
Fund manager profile
3x5 Partners is a venture fund manager based in Portland. SEC filings show 3 venture funds on record, most recently 3X5 PARTNERS FUND III-B, L.P. filed November 2020.
Source: SEC EDGAR Form D filings. Firm website data not yet available.
Team · 2 people
from public directoriesWhat they invest in
from 6 of 8 portfolio companiesBiotech ×2Hardware ×2Healthtech ×2Impact & Social Good ×2SaaS ×2Cleantech ×1Climate Tech ×1EdTech ×1
HQs:United States×7
Investments · 8 tracked
founders shown can be your intro pathBy year:2026 · 12022 · 22017 · 22015 · 27 dated
Portland, US
Plasse Ken(Executive Officer, Director)
BoardTyler Mayoras(Director)Nicholas Walrod(Director)Chuck Templeton(Director)inMark Shaughnessy(Director)
Board seatAnthony Arnerich· per SEC Form D · $32.2M raise · filed May 2017
Co-investorsBlueberry VenturesCollaborative FundS2G Investments
EnergyOakland, US
James C David(Executive Officer, Director)Woody Gibson(Executive Officer)Stewart Ramsay(Executive Officer, Director)
BoardJay Schmelter(Director)inFrederick Buckman(Director)
Board seatAnthony ArnerichNicholas Walrod· per SEC Form D · $85.8M raise · filed Jan 2020
Co-investorsEnergy Transition VenturesRiverVest Venture Partners
Vapotherm manufactures high-velocity therapy devices for respiratory distress treatment across patient populations.
HardwareHealthtechMedical DevicesExeter, US
JOSEPH ARMY(Executive Officer, Director)JOHN LANDRY(Executive Officer)in
BoardJASON LETTMAN(Director)GEOFF PARDO(Director)inSAMUEL BRASCH(Director)
Board seatAnthony Arnerich· per SEC Form D · $20M raise · filed Jul 2015
Co-investorsCross Creek AdvisorsKaiser Permanente VenturesQuestMark PartnersGilde Healthcare
Wildfire Water Solutions provides water supply and logistics infrastructure for firefighting operations in fire-prone communities, serving wildland and structural firefighting teams to support rapid response and resource efficiency during extended fire seasons.
CleantechClimate TechHardwareImpact & Social GoodBend, US
Brianna Blazek(Executive Officer)inMichael Echols(Executive Officer, Director)in
BoardMatt Diserio(Director)Chris George(Director)John Schmitz(Director)
Board seatAnthony Arnerich· per SEC Form D · $8M raise · filed Jul 2026
Bonum Therapeutics develops antibody-controlled protein therapeutics that remain inactive until bound to their target, using a sensor-domain mechanism to deliver regulated, targeted activity.
BiotechHealthtechSeattle, US
John Mulligan(Executive Officer, Director, Promoter)inNeela Patel(Executive Officer)inDiane Hollenbaugh(Executive Officer)in
BoardSamuel Bjork(Director)inMonique Schiersing(Director)inJohn McKearn(Director)in
Co-investorsRiverVest Venture PartnersRoche Venture FundVivo CapitalCodon CapitalDigitalis Ventures
Kaleidoscope provides scholarship and grant management software for organizations running award programs, helping match applicants with funding opportunities.
EdTechFintechImpact & Social GoodSaaS
Co-investorsGROOVE CAPITALRally Ventures Management, Llc
Kaleidoscope provides a software platform for scientific R&D teams to track and communicate project data, manage complex research processes, and accelerate decision-making.
BiotechEnterprise SoftwareSaaSNew York City, US
Ewan Taylor(CSO and Co-founder)Geraldine Paulus(Co-founder, VP Operations)Brian Naughton(Co-founder and CTO)inDavid Yen(Founder)inBogdan Knezevic(Founder)in
Co-investorsAIN VenturesBurda Principal InvestmentsHAWKTAILHummingbird VenturesDimension CapitalRally Ventures Management, Llc
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
Fish People
Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.
Portfolio news
latest coverage across their companiesSmart Wires · datacenterdynamics.com · Jul 27, 2026
Vapotherm · ad-hoc-news.de · Apr 18, 2026
Kaleidoscope Bio · scienceblog.cincinnatichildrens.org · Mar 9, 2026
Kaleidoscope · scienceblog.cincinnatichildrens.org · Mar 9, 2026
Bonum Therapeutics · biospace.com · Jun 10, 2025
Frequently asked questions
- How many investments has 3x5 Partners made?
- 3x5 Partners has 8 tracked investments, including 1 dated in the last 24 months.
- Where is 3x5 Partners located?
- 3x5 Partners is headquartered in Portland, US.