Macro Oceans
San Francisco, US · Founded 2020 · 10 employees on LinkedIn · 4 known investors
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Macro Oceans develops seaweed-based (kelp) feedstocks and materials as a low-carbon alternative to petroleum-based chemicals and products, building a traceable seaweed supply chain with brand, technology, and grower partners.
Also known as Macro Oceans Inc.
Founders & leadership
Macro Oceans was founded in 2020 by Matthew Perkins.

Investors · 4
Reported raises · per SEC filings
Form D private placements$2.6M disclosed across 2 of 4 rounds · 2023–2025
▶$100KraisedMay 2025 · 1 investors · ManufacturingRule 506(b)
- Matthew PerkinsExecutive Officer, Director
- Offering amount
- $100K
- Amount sold
- $100K
- Minimum investment
- $100K
- First sale
- Apr 2025
- Incorporated
- Corporation, Delaware, 2020
- Federal exemptions
- 06b
▶$2.5MraisedSep 2024 · 10 investors · ManufacturingRule 506(b)
- Matthew PerkinsExecutive Officer, Director
- Offering amount
- $4M
- Amount sold
- $2.5M
- Minimum investment
- $20.1K
- Proceeds to insiders
- $1
- First sale
- Sep 2024
- Incorporated
- Corporation, Delaware, 2020
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Company profile
researched Aug 2026Macro Oceans is a seaweed (kelp) biotechnology company that converts farmed macroalgae into low-carbon chemicals, bioactives and materials intended to replace petroleum-derived and land-crop-derived inputs. Its commercial focus is two-fold: beauty ingredients marketed as high-performance, low-carbon and 100% traceable, and alginate-based texture solutions for food. The company positions kelp as an industrial feedstock that requires no fresh water, fertilizer or pesticides and does not compete with land-based food crops, and describes broader applicability to biopolymers, pharmaceuticals, sugars and proteins.
Its first commercial product is Big Kelp Hydration, a purified polysaccharide skincare ingredient used by beauty brands including Captain Blankenship and SeaSoaked Skin, with additional brand programs referenced with Umanos and Project Reef. A commissioned MS Clinical Research study on the ingredient reported an 80% immediate increase in hydration and a 26% immediate improvement in skin barrier. In June 2025 the company introduced Big Kelp Flex, described as a low-viscosity suspension ingredient. Following the October 2024 acquisition of Everything Seaweed, the product suite also includes PFAS-free coatings for food packaging and polyacrylate-alternative texturizers for skincare.
The company operates a refinery process on kelp sourced from two farms in Alaska, grown on floating lines from the fall and harvested in May or June. Extracted polysaccharides are purified and sold to contract manufacturers that formulate finished beauty products. Batch-level traceability from farm to factory is a stated selling point, and a life cycle analysis was planned to quantify environmental impact.
Founding story
Macro Oceans was established in 2020 by Matthew Perkins, a former British diplomat who previously worked at agriculture startups, sold his earlier agtech company Yield Pop to the Climate Corporation and was the first business hire at Inari Agriculture. Perkins framed the founding thesis around seaweed as a bountiful, scalable resource requiring no fertilizer, pesticides or fresh water and not competing with land crops, with beauty chosen as the entry market because it demands high-performance sustainable materials. Founding engineer Mohammad Tajparast had previously prototyped macroalgae biorefining projects at Google X.
Business model
Macro Oceans sells refined seaweed-derived ingredients business-to-business rather than finished consumer products; management has said it deliberately chose not to launch its own beauty brand because doing so requires a different skill set. Purified extracts are supplied to contract manufacturers that formulate for beauty brands, and food-grade alginate ingredients are taken to market through distribution and ingredient-partner arrangements, including a strategic partnership with Socius Ingredients for the US food market.
Revenue comes from the sale of ingredient volumes at published per-kilogram pricing; Big Kelp Hydration pricing starts at $169 per kilogram. Management stated in October 2024 that the company has positive unit economics and is on a path to profitability, while declining to disclose sales or growth rates.
Traction
As of October 2024 the company had one ingredient on the market, Big Kelp Hydration, adopted by brands including Captain Blankenship and SeaSoaked Skin, with further brand launches described as forthcoming; it reported positive unit economics. Subsequent milestones include the Everything Seaweed acquisition, new distributors and heat-stability and kelp-pot product developments reported in early 2025, the Big Kelp Flex launch in June 2025, and the Socius Ingredients food-market partnership in July 2025.
Latest developments
Recent activity includes the June 2025 launch of Big Kelp Flex, a low-viscosity suspension ingredient; a July 2025 strategic partnership with Socius Ingredients to supply sustainable alginates to the US food market; and a series of technical publications for beauty formulators through early 2026 addressing European Commission Regulation 2023/2055 on microplastics, carbomer replacement and natural polymer performance.
▸Full profile — market position, technology, go-to-market, geography, history, risks & controversies
Market position
Macro Oceans is an early-stage supplier in the emerging US kelp and marine-ingredient sector, which lags East and Southeast Asian seaweed industries; its investors are wagering that domestic kelp becomes viable as cultivation, extraction and processing costs fall. It sits within a broader wave of biotechnology ingredient suppliers serving beauty companies seeking petrochemical alternatives, a field in which large incumbents such as L'Oreal have been active investors in comparable startups.
Stated differentiators include a single-step, zero-waste conversion process claimed to cut processing costs sevenfold, batch-level traceability of every seaweed lot back to farm, harvest date and farmer, clinically measured performance for its hydration ingredient, and kelp feedstock that avoids fresh water, fertilizer, pesticides and competition with agricultural land.
Technology
The company uses a modular, zero-waste, single-step process in which whole kelp plants are fed to a mixture of microbes that extract bioactive compounds, which are then converted into plant-based functional feedstocks such as biopolymers, pharmaceuticals, sugars and proteins. Downstream, polysaccharides valued in skincare for soothing and moisturizing are extracted and purified for commercial formulation. The company claims the single-step approach simplifies processing and cuts costs roughly sevenfold versus existing bioprocessing practice, and cites kelp as removing carbon about ten times faster than trees. The Everything Seaweed acquisition added seaweed refinery capacity plus PFAS-free packaging coating and texturizer technology.
Go-to-market
The company works directly with industry-leading brands, technology partners and growers to build a traceable seaweed supply chain, sells ingredients into contract manufacturers, and has added distributors and an ingredient distribution partnership (Socius Ingredients) for food. It also runs content marketing through a Substack newsletter covering formulation topics such as microplastic regulation and carbomer alternatives, and hosts educational webinars on the blue economy and marine ingredient formulation.
Beauty and personal care brands and their contract manufacturers seeking sustainable, traceable, high-performance ingredients; food manufacturers needing alginate-based texture and stabilization solutions; and, prospectively, packaging, pharmaceutical, plastics, textile and animal-protein industries.
Geography
Headquartered in San Francisco, California, with operations described as Sacramento-based and a team listing in Sacramento; kelp is sourced from two farms in Alaska. The 2024 acquisition of Everything Seaweed added a Portland, Maine base of processing capability, and food-market distribution is targeted at the United States.
History
Founded in 2020, the company brought its first beauty ingredient, Big Kelp Hydration, to market and in October 2024 announced the completion of a $7.5 million seed round alongside the acquisition of Portland, Maine-based Everything Seaweed, whose founder Colin Hepburn joined as chief technology officer and whose co-founder and CEO Jessica Chalmers also joined. In 2025 it launched Big Kelp Flex (June) and announced a strategic alginate partnership with Socius Ingredients for the US food market (July), while continuing to publish technical commentary on polymer and microplastic regulation into 2026.
Risks & controversies
The company's model depends on the cost competitiveness of a nascent US kelp industry that trails Asian seaweed producers, on a narrow supply base of two Alaskan farms with a seasonal fall-to-early-summer growing cycle, and on a small commercial portfolio that in late 2024 consisted of a single marketed ingredient. Sales, growth rates and the terms of the Everything Seaweed acquisition were not disclosed, and a life cycle analysis substantiating environmental claims was still planned as of October 2024.
Compiled by commissioned research from 8 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Timeline · 5
launches, deals, and filingsAnnounced a strategic partnership with Socius Ingredients to bring sustainable alginates to the US food market.
Introduced Big Kelp Flex, described as a low-viscosity suspension ingredient.
Macro Oceans acquired Portland, Maine-based seaweed processing and biomaterial supplier Everything Seaweed to add refinery capacity and products, including PFAS-free food packaging coatings and polyacrylate texturizers. Founder Colin Hepburn became CTO and co-founder/CEO Jessica Chalmers joined the team. Terms were not disclosed.
The company announced completion of a $7.5 million seed round, having secured $2.5 million in seed extension funding to finish it. Refactor Capital led, with participation from McKinley Alaska Private Investment, Knollwood Investment Advisory and Schox Venture Capital.
$7.5M source ↗
Everything Seaweed founder Colin Hepburn, with over 30 years of seaweed processing experience, became CTO of Macro Oceans following the acquisition.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
In the news
▸Research sources · 8
primary sources listed
- Macro Oceansmacro-oceans.com · web
8 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Macro Oceans do?
- Seaweed biotechnology company converting traceable kelp into low-carbon ingredients for beauty, food and materials.
- Who founded Macro Oceans?
- Macro Oceans was founded by Matthew Perkins in 2020.
- Who are Macro Oceans's investors?
- Macro Oceans's investors include HAWKTAIL, LOWERCARBON, Lowercarbon Capital, Refactor Capital.
- How much funding has Macro Oceans raised?
- Macro Oceans has disclosed $2.6M raised across 2 of its 4 known rounds.
- Where is Macro Oceans headquartered?
- Macro Oceans is headquartered in San Francisco, US.


