Seaside Ventures
Venture capitalActively deployingBoulder · Pre-Seed–Series A · 16 people tracked
Find your way into Seaside Ventures
1,658 people in our graph share verified history with the Seaside Ventures team — schools, employers, funds. One of them is your warm intro.
Investment thesis
Seaside Ventures invests in science-driven consumer health technologies aimed at tackling the root causes of health challenges within the large global healthcare market. The firm's mission is to improve the mental and physical well-being of over a billion people by turning transformative innovation into accessible, scalable solutions. Positioning itself as a strategic partner rather than just a capital provider, Seaside helps founders bridge the gap between scientific validation and commercial success—refining business models, optimizing operations, building go-to-market strategies, forming strategic partnerships, expanding distribution, scaling customer acquisition, and supporting PR and branding efforts to reach and grow their markets.
Source: firm website, verified Aug 3, 2026.
Team · 16 people
from the firm's website & public directories
Founder mafia
4 people who came through Seaside Ventures went on to found or lead other companies.
What they invest in
from 14 of 28 portfolio companiesHealthtech ×9Biotech ×8Digital Health ×6Medical Devices ×5Wellness & Fitness ×5Consumer ×4AI & Machine Learning ×3Direct to Consumer ×3
HQs:United States×9
Investments · 28 tracked
founders shown can be your intro pathBy year:2025 · 12024 · 62023 · 12022 · 19 dated
Aura Bora is a sparkling water brand that produces flavored beverages made with filtered water, herbal extracts, and natural sweeteners, positioned as a healthier alternative to traditional sodas and commercial seltzers.
ConsumerDirect to ConsumerFoodTech
Co-investorsAssembled BrandsSiddhi CapitalBalanced BreakfastConsumer VenturesGaingelsSimple Food Ventures
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BiomeSense builds an AI-enabled platform combining hardware (GutLab) and bioinformatics (MetaBiome) to continuously generate and analyze gut microbiome data.
AI & Machine LearningBiotechDigital HealthHardwareHealthtechChicago, US
Kevin Honaker(Executive Officer, Director)in
BoardDylan Nichols(Director)inAshley Hartman(Director)inVanessa Rollings Giannis(Director)Andrew Bluestein(Director)inOrhan Ertughrul(Director)
Co-investorsBluestein VenturesChicago Early Growth Ventures (CEGV)ECP GrowthIrishAngelsOverton Venture CapitalService Provider Capital
Calorify measures individual metabolic rates and energy expenditure using doubly labeled water, a scientific method to quantify the calories people burn.
AI & Machine LearningDigital HealthHealthtechSports TechWellness & Fitness
Hari Mix(Founder & CEO)in
Co-investorsSanta Cruz VentureHealthtech CapitalLEAD
Circulate Health provides therapeutic plasma exchange (TPE) treatments for longevity care, offering science-based clinical interventions to extend healthspan.
BiotechHealthtechLongevityMedical DevicesWellness & FitnessSeattle, US
Eric Verdin(Co-Founder, CEO Buck Institute)Robbie Schwietzer(Executive Officer)inBrad Younggren(Co-Founder, CEO)
BoardUri Greenwald(Director)in
Co-investorsKhosla VenturesScrum Ventures
Ketone manufactures exogenous ketone supplements designed to raise blood ketone levels for enhanced cognitive and physical performance.
ConsumerDirect to ConsumerHealthtechWellness & Fitness
Michael Brandt(Founder)in
Co-investorsAndreessen HorowitzAntiThe Family FundLiquid VenturesPareto Holdings
Leilo is a non-alcoholic beverage brand that produces kava-infused canned drinks in various flavors designed to promote relaxation and calm without intoxication.
ConsumerDirect to ConsumerWellness & Fitness
Sol
Next Life Sciences works in reproductive healthcare, focused on solutions for couples.
BiotechFemTechHealthtech
L.R. Fox(Founder & Executive Chairman)Dr. Charles Carignan(Chief Medical Officer)Dr. Darlene Walley(Chief Executive Officer)Steve Bacich(President & COO)inDr. Bob Dudley(Chief Technology Officer)Dr. Rob Kellar(Chief Development Officer)
Co-investorsStreamlined VenturesUnruly CapitalMystic VenturesStartUp Health
Pangea Bio develops therapies targeting central nervous system and mental health disorders by activating the TrkB receptor pathway to promote neuronal survival and synaptic plasticity.
BiotechDeep TechDigital Health
Co-investorsMetaplanetNO LABEL VENTURESVox CapitalXEIA Venture Partners
Paterna Biosciences is developing a first-in-class biologic for reproductive biology using in vitro spermatogenesis technology.
BiotechDigital HealthFemTechHealthtechMedical DevicesSalt Lake City, US
Alex Pastuszak(Co-founder and Chief Executive Officer)Brad Cairns(Co-founder and Chief of Scientific Advisors)Jim Hotaling(Co-founder and Chairman)
Co-investorsDraper AssociatesSpringTide VenturesUtah Innovation Fund
NEXT Life Sciences is developing Plan A, a non-hormonal, long-lasting, and reversible male birth control method intended as an alternative to vasectomy, condoms, and withdrawal.
BiotechDigital HealthHealthtechMedical Devices
L.R. Fox(Founder & Executive Chairman)Dr. Darlene Walley(Chief Executive Officer)
Co-investorsEverybody VenturesMech VenturesTransform Capital ManagementHV Capital
Samphire Neuro develops brain-based neurotechnology medical devices to treat chronic pain and mood conditions in women, targeting PMDD, dysmenorrhea, perimenopause, chronic migraines, and endometriosis.
Digital HealthFemTechMedical Devices
Emilė Radytė(CEO (Founder))inAlex Cook(COO (Founder))inErvinas Bern(CTO)inKendell Cannon(Chief Medical Officer)
Co-investorsAfterWork VenturesAlberts Impact VenturesAngel AcademeCVX VenturesFirstpickFortify Ventures+3 more
Somnee develops a wearable sleep and brain health device using clinical-grade EEG sensors and non-invasive neurostimulation powered by proprietary AI to improve sleep quality and neurological health for consumers.
AI & Machine LearningHardwareHealthtechMedical DevicesBerkeley, US
Co-investorsKhosla Ventures
Z Biotic develops genetically engineered probiotics designed to improve daily health and wellbeing.
BiotechConsumerHealthtechWellness & FitnessSan Francisco, US
Stephen Lamb(Founder)inZack Abbott(CEO)
Co-investorsAble PartnersBabel VenturesChampion Hill VenturesFundamental VenturesGoat Rodeo CapitalHyperguap+6 more
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
AdaptyxCoveFEASTFlausLifeforcePaterna BiosciencesRorraSamphireSensory CloudStriveSuperpowerTiDBiTsTPEUnlockedUnlocked Labs
Portfolio news
latest coverage across their companiesTPE · transportxtra.com · Sep 17, 2026
Ketone-IQ · pulse2.com · Sep 3, 2026
Leilo · latimes.com · Aug 12, 2026
Circulate Health · geekwire.com · Aug 12, 2026
Pangea Bio · cambridgebiocapital.substack.com · Jul 21, 2026
Somnee · athletechnews.com · Jul 17, 2026
Samphire Neuroscience · futurefemhealth.com · Jun 2, 2025
Frequently asked questions
- How many investments has Seaside Ventures made?
- Seaside Ventures has 28 tracked investments, including 3 dated in the last 24 months.
- What stage does Seaside Ventures invest at?
- Seaside Ventures invests at the Pre-Seed, Seed, Series A stages.
- What is Seaside Ventures's typical check size?
- Seaside Ventures typically writes checks of $250K.
- What sectors does Seaside Ventures focus on?
- Seaside Ventures focuses on Consumer, Digital Health, Healthtech, Medical Devices, Mental Health, Sector Agnostic, Wellness & Fitness.
- Where is Seaside Ventures located?
- Seaside Ventures is headquartered in Boulder, US.
- Who does Seaside Ventures co-invest with?
- Seaside Ventures most often shares deals with Siddhi Capital, Draper Associates, Khosla Ventures, among 29 tracked co-investors.
Images
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Co-investors · 12
Siddhi Capital is a growth equity firm focused on the food and beverage sector, combining investment and operating expertise to accelerate growth for CPG and food companies.
SOSV is a deep tech venture capital firm that makes first-check pre-seed investments and follow-on rounds in startups focused on human and planetary health, providing lab space and hands-on support at its US locations.
Long Journey Ventures is an early-stage venture firm that backs unconventional, 'magically weird' founders and ideas, positioning itself as a hands-on, community-oriented partner to its companies.
BCV Labs is the platform and hands-on support arm of Bain Capital Ventures, providing portfolio founders with go-to-market strategy, brand development, hiring assistance, and customer introductions.
Everywhere Ventures is an early-stage venture firm, backed by a community of founders and operators as LPs, that writes early checks (including pre-seed) into startups across many sectors and geographies.
M13 is a venture capital firm that invests in seed and Series A stage software companies.
Winklevoss Capital is an investment firm that backs founders working on hard problems in critical, frontier technology domains.
Serena Ventures is a venture capital firm that backs founders building companies across how people live, work, move, and connect, with a global perspective and a focus on expanding access, ownership, and opportunity.
Gemini Israel Ventures is an Israeli venture capital firm and early pioneer of the country's VC industry, focused on early and seed stage investments in information technology companies.
Bold Capital Partners is a venture capital firm based in Los Angeles, California. Its portfolio includes companies such as Insilico Medicine, which applies artificial intelligence to biomarker development and drug discovery, reflecting a focus on frontier technologies in areas like AI-driven life sciences.
Visible Ventures is a venture firm investing in companies building better paths to wealth, health, and upward mobility for Gen Z, the generation reshaping the economy.
Firms observed investing alongside Seaside Ventures, from public investor directories. Shared companies are the overlap with Seaside Ventures's recorded portfolio.
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