Collapsed into insolvency after its founder faced embezzlement charges; shut down in 2024
The rise & fall
8 moments · 2012–2024
The key moments.
Aug 2012
🌱
Aug 2012
Founded in Seoul
Lee Sang-hyuk starts what will become Korea's strangest conglomerate-in-a-hurry.
Wikipedia
2013–16
2013–16
The roll-up machine
Rather than build, Yello buys more than 90 small startups across commerce, media, ads and travel — paying largely in its own shares.
Wikipedia
Dec 2014
🦄
Dec 2014
South Korea's first unicorn
The roll-up crosses a 1-trillion-won valuation.
Korea Herald
2016
📈
2016
The peak: Forbes pegs it at ~$4B$4B
Soaring revenue from 90-plus subsidiaries — and no profit anywhere in sight.
Forbes
2017–18
2017–18
Losses mount, affiliates go unpaid
The conglomerate never turns revenue into profit, and allegations grow that the founder borrowed heavily from affiliates without repaying them.
The Investor
2018
💔
2018
Branded a 'dead unicorn' — joins the Unitard Club 💔
By 2018 the Korean press writes it off, years before the formal end.
Korea Herald
2019
2019
Founder ousted over embezzlement charges
The board pushes out Lee Sang-hyuk as the group unravels.
Korea Herald
2024
🪦
2024
Shuts down for good
After years of zombie insolvency, Yello Mobile finally closes.
Korea Herald
$4Bof peak value erased · 6 years
How it happened
Yello Mobile was South Korea's first startup unicorn, reaching a 1-trillion-won valuation in December 2014 and a Forbes-estimated $4B by 2016. Its strategy was unusual: rather than build, it rolled up more than 90 small startups across mobile commerce, media, advertising and travel, paying largely in its own shares.
The conglomerate never converted its soaring revenue into profit, and it unraveled amid allegations that founder Lee Sang-hyuk had borrowed heavily from affiliates and failed to repay them; he was pushed out in 2019 over embezzlement charges. Widely branded a 'dead unicorn' by 2018, Yello Mobile finally shut down in 2024.
Source: Korea Herald / The Investor / KoreaTechDesk / Wikipedia (South Korea's first unicorn, ₩1T valuation Dec 2014; Forbes valued it ~$4B in 2016; roll-up of 90+ startups; chronic losses and founder Lee Sang-hyuk's over-borrowing/embezzlement led to a 2019 board ouster; a 'dead unicorn' by 2018, shut down 2024)
