Rectangle Labs
Chicago, US · Founded 2023 · Delaware corporation · 8 employees on LinkedIn · 3 known investors
Rectangle provides a single API that unifies shipment data — including tracking, shipment, and customs data — across a company's transportation network. It targets logistics and supply chain operations teams to automate manual data workflows and integrate with vendors.
Also known as Rectangle · Rectangle HQ · Rectangle Labs, Inc.
Founders & leadership
Rectangle Labs was founded in 2023 by Matthew Salafski, Matt Salefski, and Marvin Kennis.
Investors · 3
Reported raises · per SEC filings
Form D private placements$750K disclosed across 1 of 2 rounds · 2023–2026
▶$750KraisedJan 2024 · 1 investors · Other TechnologyRule 506(b)
- Matthew SalafskiExecutive Officer, Director
- Offering amount
- $3M
- Amount sold
- $750K
- First sale
- Dec 2023
- Incorporated
- Corporation, Delaware, 2023
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Company profile
researched Aug 2026Rectangle (Rectangle Labs, Inc.) is a Chicago-based software company providing a unified API for shipment data across a company's transportation network. The platform is positioned as automation infrastructure for transportation and logistics teams, exposing endpoints that cover data points across a shipment's journey "from factory to front door," including tracking data, shipment data and customs data.
The company's stated product functions are integrating with a shipper's full transportation network, automating repetitive operational workflows, and surfacing key shipment milestones across vendors. Its sub-industry categorizations include analytics and performance software, application integration software and logistics software, delivered as cloud software. Company profiles describe the platform as a modern data integration alternative to manual data entry and traditional EDI, aimed at reducing the operational cost of moving shipment data.
Founding story
Co-founded by Marvin Kennis and Matt Salefski, who serves as CEO. The founders' stated premise is that data about a shipment is as important as the shipment itself, and that supply chain data problems have gone unsolved for three decades, leaving operations teams to copy and paste data manually while EDI remains unreliable and standardization has not occurred.
Business model
Rectangle sells access to its data integration platform; profile data describes subscription-based revenue with tiered access to the platform's tools and features, alongside partnerships with logistics firms. Access to the product is gated through an application/early-access process on its website.
Subscription tiers granting access to the platform's tools and features, plus partnerships with logistics companies, per company profile data.
Traction
The company states its platform powers millions of workflows that move freight for large companies, and limits onboarding to a set number of early-access spots per quarter (25 remaining as of the website in 2025). One venture deal is recorded to date, a February 2026 pre-seed round.
Latest developments
In February 2026 Rectangle raised $2.5 million in pre-seed funding led by Autotech Ventures, earmarked for further platform development and improved shipment data and partner communications management, with plans for new products for optimizing logistics processes and expansion into additional international markets.
▸Full profile — market position, technology, go-to-market, geography, history, risks & controversies
Market position
Early-stage company positioned as automation and data-integration infrastructure for technology-forward transportation and logistics teams, competing against legacy logistics systems and EDI-based data exchange.
Positions itself against legacy logistics systems and unreliable EDI by offering a single standardized API for shipment data at what it describes as an accessible price, rather than expensive incumbent platforms.
Technology
A single API with unified endpoints covering the data points in a shipment's journey, including tracking, shipment and customs data, intended to replace manual data entry and legacy EDI-based data exchange. The company frames its approach as modern technology delivered at an accessible price point relative to legacy systems.
Go-to-market
Direct, gated onboarding via the company website through an "apply for access" / early-access waitlist and demo requests, with a limited number of onboarding spots per quarter; case studies are used as sales material.
Logistics and transportation operations teams, including logistics companies and shippers requiring shipment, tracking and customs data across their transportation networks, ranging from small logistics operators to large multinational corporations.
Geography
Headquartered in Chicago, Illinois, United States, with the website noting it is "Built in Chicago." Profile data indicates availability in various international markets and stated intent to expand into additional international markets, without disclosed target regions.
History
Founding year is reported inconsistently across sources: a Preqin profile lists the company as established in 2024, while an SEC Form D filing for Rectangle Labs, Inc. dates to January 2024 reporting $750,000 sold. The company was co-founded by Marvin Kennis and Matt Salefski (CEO), and Matthew Salafski is listed as a director and executive in the Form D filing. In February 2026 the company raised a $2.5 million pre-seed round led by Autotech Ventures.
Risks & controversies
Sources report conflicting founding dates (2024 per one profile) and inconsistent funding records — one directory lists no known external funding while another reports a $2.5 million pre-seed. The company is early stage with a gated, waitlisted product and a small disclosed capital base.
Compiled by commissioned research from 6 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.
Competitors · 3
by search overlap
Companies competing with Rectangle Labs for the same Google search keywords, organic and paid, via search-intersection analysis.
Timeline · 2
launches, deals, and filingsRectangle raised USD 2.5 million in pre-seed funding led by Autotech Ventures, to be used to further develop its technology platform and enhance management of shipment data and partner communications.
$2.5M source ↗
Rectangle Labs, Inc. filed a new Form D reporting $750,000 sold under exemption 06b.
$750K source ↗
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
Legal entities · 1
corporate structure▸Research sources · 6
primary sources listed
- Rectangle Labsrectanglehq.com · web
6 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Rectangle Labs do?
- Rectangle offers a single API unifying shipment, tracking and customs data for logistics and transportation teams.
- Who founded Rectangle Labs?
- Rectangle Labs was founded by Matthew Salafski, Matt Salefski, Marvin Kennis in 2023.
- Who are Rectangle Labs's investors?
- Rectangle Labs's investors include Illinois Ventures, Iron Prairie, Operator Stack.
- How much funding has Rectangle Labs raised?
- Rectangle Labs has disclosed $750K raised across 1 of its 2 known rounds.
- Where is Rectangle Labs headquartered?
- Rectangle Labs is headquartered in Chicago, US.