Seaside Ventures
Venture capitalActively deployingBoulder · Pre-Seed–Series A · 13 people tracked
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 · 13 people
from the firm's website.png)
Founder mafia
3 people who came through Seaside Ventures went on to found or lead other companies.
What they invest in
from 9 of 24 portfolio companiesBiotech ×4Consumer ×4Healthtech ×4Wellness & Fitness ×4Digital Health ×3Direct to Consumer ×3FemTech ×2Medical Devices ×2
HQs:United States×4
Investments · 24 tracked
founders shown can be your intro pathAura Bora is a sparkling water brand whose beverages are flavored with herbs, fruits, and flowers, with no added sugar, sweeteners, citric acid, or artificial ingredients.
ConsumerDirect to ConsumerFoodTech
Co-investorsAssembled BrandsSiddhi CapitalBalanced BreakfastConsumer VenturesGaingels
Circulate Health provides therapeutic plasma exchange (TPE) as a turnkey clinical service that it delivers through partner clinics, supplying trained apheresis nurses, FDA-cleared equipment, standardized protocols, and operational support.
BiotechHealthtechLongevityWellness & FitnessSeattle, US
Robbie Schwietzer(Executive Officer)Brad Younggren(Executive Officer, Director, Promoter)
BoardUri Greenwald(Director)
Co-investorsKhosla VenturesScrum Ventures
Maker of a sustainable electric flosser for oral care.
Ketone makes Ketone-IQ, a ketone drink positioned as an energy source for physical and mental performance, sold to athletes and other high performers via subscription.
ConsumerDirect to ConsumerWellness & Fitness
Co-investorsAntiThe Family Fund
Leilo makes canned kava beverages made from standardized noble kava, intended as a low-calorie alcohol alternative for relaxation and social occasions.
ConsumerDirect to ConsumerWellness & Fitness
Longevity and wellness company offering personalized health memberships.
Paterna Biosciences develops in vitro spermatogenesis (IVS) technology that drives adult testicular stem cells to develop into optimized sperm, aiming to treat male infertility and improve IVF success rates.
BiotechDigital HealthFemTech
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 HealthHealthtech
Co-investorsEverybody VenturesMech VenturesTransform Capital Management
Samphire Neuro makes the Nettle Headband, a medical-grade wearable that uses neurostimulation to manage mood and chronic pain symptoms linked to hormonal changes across the menstrual cycle.
Digital HealthFemTechMedical Devices
Emilė Radytė(CEO)
Co-investorsAfterWork VenturesAlberts Impact VenturesAngel AcademeCVX VenturesFirstpickFortify Ventures+3 more
Respiratory health company working on treatments in the chronic refractory cough space.
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
Harnesses advanced reinforcement learning and real-time ICU data to deliver precise, personalized dosing recommendations for sepsis management in critical care settings.
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
Portfolio news
latest coverage across their companiesCirculate Health · geekwire.com · Aug 12, 2026
Leilo · latimes.com · Aug 12, 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 24 tracked investments.
- 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
Khosla Ventures is a venture capital firm that invests in early-stage companies focused on technology, mobile, and clean energy sectors, including biotechnology applications. The firm provides capital and strategic support to entrepreneurs developing breakthrough technologies across multiple markets.
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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