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MAY 2026 Willog closes Series B-2 with seven investors 200+ global enterprise customers 0% churn over five straight years NEW AI-powered Control Tower 2.0 launches 2025 Presidential Award, South Korea GLOBAL Seoul · Torrance · Singapore · Tokyo MAY 2026 Willog closes Series B-2 with seven investors 200+ global enterprise customers 0% churn over five straight years NEW AI-powered Control Tower 2.0 launches 2025 Presidential Award, South Korea GLOBAL Seoul · Torrance · Singapore · Tokyo
Company Profile Supply-Chain Intelligence Seoul, South Korea

Willog.io

The Seoul startup teaching cargo to keep its own diary - and giving global shippers something logistics rarely offers: proof.

2021Founded
200+Enterprise customers
Series B-2Latest round · 2026
4Countries of operation
Willog logo
Willog - the AIoT supply-chain company built by founders who once couldn't see their own shipments.
The Dispatch

Making the Invisible Visible

Most of the modern economy moves in the dark. A pallet of vaccines leaves a warehouse, changes hands three times, crosses an ocean, and arrives - and for most of that journey no one can say with certainty what happened to it. Was it too warm? Dropped? Delayed in a hot yard for six hours? Willog, a company founded in Seoul in 2021, was built to answer exactly those questions.

Willog makes small IoT sensor devices that travel inside a shipment and record its conditions - temperature, humidity, shock and location - the entire way. That data flows into an AI-powered platform the company calls the Control Tower, where shippers can watch cargo in real time, diagnose what went wrong, and increasingly, predict what is about to.

The idea did not come from a lab. Willog's founders were running a fresh-food distribution business when they ran headfirst into the opacity of cold-chain logistics. They could not see their own goods in transit, and the blind spots were costing them. So they built the transparency they wished they had - and then discovered that pharmaceutical companies, chip makers, chemical shippers and even armies wanted the same thing.

Five years later that instinct has become a company with more than 200 global enterprise customers, an operating footprint across four countries, and, as of May 2026, a fresh Series B-2 round backed by seven investors.

7xYoY customer growth
0%Churn, 5 years running
44+Intellectual properties
~64Team members
What Willog Does

Hardware, Software, and a Promise of Proof

Willog describes itself as an AIoT supply-chain company - artificial intelligence layered on top of the Internet of Things. In plain terms, it puts sensors on cargo and intelligence behind the data those sensors produce. The pitch is narrow and specific: the most expensive logistics failures are the ones no one sees, so Willog's job is to make them visible.

That matters most for goods that cannot tolerate surprises. A few degrees of warming can ruin a batch of biologics. A single hard drop can crack a display panel or a precision instrument. A humidity spike can degrade a lithium battery. For these shipments, "it probably arrived fine" is not good enough, and Willog's sensors turn probably into a timestamped record.

Logistics remains one of the last industries still heavily dependent on manual experience. Willog is turning invisible logistics events into data, intelligence, and action. Daniel Yun, CEO, Willog

The customers

Willog's customer list reads like a map of high-stakes cargo. Its solutions are used across biopharma and pharmaceuticals, semiconductors and displays, chemicals, batteries, food and fresh food, auto parts and luxury goods. In 2025 the Republic of Korea Army signed on to modernize military logistics with the same IoT-plus-AI approach. These are shippers, manufacturers and third-party logistics providers who share one trait: the goods they move are too valuable or too fragile to lose track of.

The problem it solves

Traditional shipping measures two points - origin and destination - and infers everything in between. Willog's argument is that the damage happens in the middle, in the gaps between scans, and that inference is not evidence. By riding along with the shipment, its devices close those gaps. When a claim is disputed, when a cold-chain excursion needs explaining, or when a route keeps producing damaged goods, Willog customers have a continuous record instead of a guess.

Products & Services

Four Layers, One System

Hardware

Sensor Devices — Safe T1, V2, S2

Patented IoT devices that ride with cargo and log temperature, humidity, shock and location across warehouse, road, ocean and air - the raw signal for everything else.

Platform

Control Tower 2.0

An AI-powered monitoring console covering warehouse conditions, inland trucking and multi-modal international shipping. The 2.0 release, unveiled in 2026, adds predictive risk features.

Analytics

Intelligence

Diagnostics built on collected data: cargo-damage analysis, operation-optimization insights, and spatial environment risk assessment for specific lanes and locations.

Financial

Logistics Insurance

Data-backed, logistics-specialized insurance informed by real cargo-condition data - turning the sensor record into a pricing and claims advantage.

How It Works

A Five-Stage Path From Seeing to Predicting

Willog frames its platform as a progression - each stage builds on the data collected by the one before it, moving customers from simply watching cargo to anticipating what will happen to it.

Visibility

Real-time condition and location data across every leg of the journey.

Precision Diagnosis & Alerts

Pinpoint what went wrong, where, and flag it the moment it matters.

Real-Time Action

Intervene while cargo is still in motion, not after it has been written off.

Data-Driven Improvement

Use accumulated records to fix the routes, handlers and lanes that keep failing.

AI Risk Prediction

Forecast likely problems before they occur - the core of Control Tower 2.0.

Where It Fits

A Crowded Market, a Specific Angle

Supply-chain visibility is not an empty field. Companies like Sensitech, Controlant, Tive, Roambee and project44 all chase versions of the same goal, and the category has drawn steady investment as global shippers demand more accountability. Willog's differentiation is less about inventing a new category than about owning the full stack within it - the sensor, the platform, the analytics and even the insurance - and about a retention record that is unusual anywhere in software.

That record is the number executives tend to repeat: zero percent customer churn over five consecutive years, alongside 7x year-over-year growth in new customers. In enterprise software, near-zero churn usually signals a product that is deeply embedded in how customers operate. Willog also leans on its Korean origins as a selling point, marketing "K-logistics" technology abroad and pairing it with 44-plus intellectual properties and a 2025 Presidential Award at home.

This MOU represents a meaningful opportunity to contribute to Indonesia's national vision of building the National Logistics Ecosystem. Jihyun Yoon, Co-CEO, Willog

The business model

Willog runs a B2B hardware-plus-SaaS model. It provides the sensor devices, charges enterprises for access to the Control Tower platform and Intelligence analytics, and adds a data-backed insurance line on top. The buyers are the companies with the most to lose from an unseen failure - which is why pharmaceuticals, semiconductors and high-value manufacturing feature so heavily in its customer base.

The Money

Backed to Predict, Not Just Report

In May 2026 Willog closed a Series B-2 round backed by seven Korean and global investors. The company has not disclosed dollar figures, but the direction is clear: fund the shift from visibility to AI-driven prediction, and expand across North America and Asia.

Trajectory to Series B-2 (illustrative timeline, amounts undisclosed)
2021 · Founding
Seed era
2022 · Traction
~30 clients
2025 · Scale
Award year
2026 · Series B-2
7 investors

Series B-2 investors: KB Investment, SGC Partners, Sneakpick Investment, IBK Capital, Re-Investment, Muirwoods Ventures, and Big Basin Capital.

The Story So Far

Five Years, One Idea

2021

Founded in Seoul

Born out of firsthand frustration with opaque cold-chain logistics in a fresh-food distribution business.

2022

Early traction

Secures roughly 30 domestic and international clients within about a year and a half.

2024

Intelligence layer

Expands from raw monitoring into diagnostics for cargo damage, operations and spatial risk.

2025

Recognition & defense

Wins South Korea's Presidential Award, partners with the Republic of Korea Army, and signs an MOU with Indonesia's ICCA.

2026

Series B-2 & Control Tower 2.0

Closes a seven-investor round and launches AI-powered predictive supply-chain intelligence.

Partnerships & Reach

From Korean Barracks to Indonesian Islands

Sept 2025 · Southeast Asia

ICCA Indonesia

An MOU with the Indonesia Cold-Chain Association to modernize cold-chain infrastructure across 17,000 islands, supporting the "Golden Indonesia 2045" vision, with pilots in seafood and pharmaceuticals.

Aug 2025 · Defense

Republic of Korea Army

A partnership to modernize military logistics with Willog's AI and IoT solutions - extending condition monitoring from commercial cargo to defense supply lines.

Frequently Asked

Willog, Explained

What does Willog do?

Willog provides AIoT supply-chain solutions: patented IoT sensor devices that track cargo condition (temperature, humidity, shock, location) paired with an AI-powered Control Tower platform and analytics that give shippers real-time visibility and risk prediction.

Who founded Willog and when?

Willog was founded in 2021 in Seoul, South Korea, and is led by co-CEOs Daniel J. Yun, Sunghoon (Ben) Bae and Jihyun Yoon. The idea grew from the founders' experience running a fresh-food distribution business.

Who are Willog's customers?

More than 200 global enterprises in biopharma, semiconductors, electronics, chemicals, batteries, food, auto parts and luxury goods, plus government and defense clients such as the Republic of Korea Army.

How much funding has Willog raised?

Willog closed a Series B-2 round in May 2026, backed by seven investors including KB Investment, SGC Partners, IBK Capital, Muirwoods Ventures and Big Basin Capital. Specific amounts have not been publicly disclosed.

Where does Willog operate?

Headquartered in Seoul, Willog also operates in Torrance, California (US), Singapore and Tokyo, Japan, and is expanding across North America and Asia.

Topics
Cold ChainAIoTSupply Chain Visibility Pharmaceutical LogisticsSensor DevicesRisk Prediction 3PLGxP / GMPSouth Korea
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Links & Sources

Profile compiled from public sources including willog.io, PR Newswire, Morningstar, Crunchbase and Tracxn. Funding amounts and some financial details are undisclosed by the company; figures cited (customer counts, growth, churn) are as reported by Willog. Video interviews and product demos, where available, are published on Willog's website and LinkedIn.