Jan Koum

Ukrainian-born American entrepreneur, co-founder of WhatsApp

Knowledge panel

Occupation

engineer

Born

February 24, 1976

Zodiac

Pisces

18,448

days alive

50

years old

Born
February 24, 1976
Zodiac
♓︎Pisces·dragon 🐉
Updated Jul 2026

About

Ukrainian-born American entrepreneur, co-founder of WhatsApp

Birth Chart

Natal Chart

Jan's Birth Chart

Astrology
♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎☉☽☿♀♂♃♄⛢♆♇
Fire
Earth
Air
Water
☉

Sun Sign

Pisces♓︎

☽

Moon Sign

Capricorn♑︎

Dominant Element

Water

⚠️ Rising sign requires birth time for accurate calculation

Planetary positions calculated for February 24, 1976

Day Lookup ToolDay MilestonesOn This Day
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⚡ Timeline
2014
Day 13,875
Age 37

Acquisition by Facebook

Confidence
96%
Feb 19, 2014

WhatsApp acquired by Facebook for approximately $19 billion.

2009
Day 12,054
Age 33

WhatsApp Founded

Confidence
96%
Feb 24, 2009

Jan Koum and Brian Acton co-founded WhatsApp Inc.

2007
Day 11,269
Age 30

Left Yahoo!

Confidence
96%
Jan 1, 2007

Left his position at Yahoo! after nine years.

1997
Day 7,617
Age 20

Infrastructure Engineer at Yahoo!

Confidence
96%
Jan 1, 1997

Started working at Yahoo! as an infrastructure engineer.

Day 7,617
Age 20

Attended San Jose State University

Confidence
96%
Jan 1, 1997

Enrolled at San Jose State University and studied mathematics and computer science.

1992
Day 5,790
Age 15

Immigrated to the United States

Confidence
89%
Jan 1, 1992
Flight Manifest
Verified Route
1976
Day 0
Age 0

Born in Kyiv, Ukraine

Confidence
96%
Feb 24, 1976

Born in Kyiv, Ukraine.