{{Short description|Israeli entrepreneur and investor}}

{{infobox person | name = Or Offer | image = Or Offer Pic2.jpg | birth_date = 1983 | birth_place = Israel | alma_mater = Reichman University (B.A. in Business Administration, 2008) | occupation = Entrepreneur, investor | known_for = CEO and Founder of Similarweb | spouse = Married | children = 3 }}

'''Or Offer''' (born: 1983; Hebrew: אור עופר) is an Israeli entrepreneur and investor. He is the founder and chief executive officer (CEO) of Similarweb, a digital market intelligence company that was listed on the NYSE in 2021 at a valuation of $1.6 billion.

== Early life and education == Offer was raised in Tzur Hadassah, near Jerusalem, in a family of artists and jewellery designers. He attended Boyar High School in Jerusalem and served in the Israel Defense Forces as a dog operator in the Oketz (canine) unit.<ref name=":0">{{Cite web |title="אנגלית צריכה להיות שפה רשמית, וישראל תהיה הוליווד של ההייטק" {{!}} מוסף כלכליסט |url=https://newmedia.calcalist.co.il/magazine-12-8-21/m01.html |access-date=2026-01-07 |website=newmedia.calcalist.co.il}}</ref>

Following his military service, he studied at the Interdisciplinary Center Herzliya (now Reichman University) and received his B.A. in Business Administration in 2008.<ref>{{Cite web |date=2023-04-10 |title=Reichman University - Herzliyan 2023 |url=https://issuu.com/tamara.mizroch/docs/herzliyan_2023_final |access-date=2026-01-06 |language=en |via=Issuu}}</ref>

== Career ==

=== Similarweb === After completing his military service, Offer founded a jewellery chain with physical and online stores. During market research, he identified the difficulty of finding similar websites online, which led him to develop a browser extension in 2007 that became the foundation of Similarweb. Offer has served as the company’s CEO since then.<ref name=":1">{{Cite web |title="לכו להיי-טק, המשכורות מטורפות - 20 אלף שקל ומעלה; למה ללמוד משפטים או ראיית חשבון?" |url=https://archive.today/20240125003451/https://www.themarker.com/technation/2019-12-19/ty-article/.premium/0000017f-f58d-d887-a7ff-fded89d20000#selection-225.0-225.84 |website=TheMarker |language=he|via=archive.today}}</ref><ref>{{Cite news |last=MacBride |first=Elizabeth |title=SimilarWeb Is One Of Israel's Hottest Pre-IPO Companies. Here's Its CEO's Advice On Growing. |url=https://www.forbes.com/sites/elizabethmacbride/2017/02/28/the-quintessential-entrepreneur-a-conversation-with-top-ipo-candidate-similarwebs-ceo/ |access-date=2026-01-28 |work=Forbes |language=en}}</ref>

In 2011, Offer directed the company’s shift from a consumer-oriented browser tool to a digital market analysis platform for businesses and investors.<ref>{{Cite web |title=Tech in Asia - Connecting Asia's startup ecosystem |url=https://www.techinasia.com/the-story-of-similarweb |access-date=2026-01-07 |website=www.techinasia.com |language=en-US}}</ref><ref>{{Cite news |last=כהן |first=שגיא |date=27 October 2020 |title=חצי שנה אחרי שפיטרה 50 עובדים: השקעה של 120 מיליון דולר בסימילרווב הישראלית |url=https://archive.today/20240124201924/https://www.themarker.com/technation/2020-10-27/ty-article/.premium/0000017f-db73-d856-a37f-fff361320000 |work=TheMarker}}</ref> Under his leadership, Similarweb grew to over 1,200 employees across 12 offices. In May 2021, the company completed its initial public offering (IPO) on the NYSE with a valuation of approximately $1.6 billion.<ref>{{Cite news |last=ולדהורן |first=שירי חביב |date=2022-05-15 |title="אני קפטן בספינה בסערה": מנכ"ל סימילרווב לא מתחרט על ההנפקה |url=https://www.globes.co.il/news/article.aspx?did=1001411742 |access-date=2026-01-07 |work=Globes}}</ref><ref>{{Cite news |date=2021-12-05 |title=Similarweb completes NYSE IPO, at $1.6b valuation |url=https://en.globes.co.il/en/article-similarweb-raises-165m-on-nyse-at-16b-valuation-1001370797 |access-date=2026-01-06 |work=Globes |language=en}}</ref>

Offer is described as one of the few "sole founders" in the Israeli technology sector. His background in a combat unit, rather than in a military intelligence division (which is common among Israeli tech founders), has also been noted as distinctive.<ref name=":0" />

=== Other Ventures and Investments === Offer was a founding partner at AfterDownload, which was later acquired by IronSource.<ref>{{Cite web |last=Bort |first=Julie |title=This guy was trying to build a jewelry business and wound up with a hugely successful tech company |url=https://www.businessinsider.com/how-a-jewelry-business-spawned-similarweb-2015-8 |access-date=2026-01-07 |website=Business Insider |language=en-US}}</ref> He is also an active angel investor and serves on advisory boards of several startups, including Moon Active, OpenWeb, Reco, and GrowthSpace. In addition, he is a member of the General Assembly at Reichman University.<ref>{{Cite news |date=2021-11-23 |title=Moon Active valuation surges to $5 billion on back of $300 million Insight funding |url=https://www.calcalistech.com/ctech/articles/0,7340,L-3923217,00.html |archive-url=https://web.archive.org/web/20251115175040/https://www.calcalistech.com/ctech/articles/0,7340,L-3923217,00.html |archive-date=2025-11-15 |access-date=2026-01-05 |work=CTECH - www.calcalistech.com |url-status=live }}</ref><ref>{{Cite web |date=2015-12-03 |title=Guess what? Sheng Fu, Anna Fang and Or Offer are speaking at RISE |url=https://riseconf.com/blog/guess-what-sheng-fu-anna-fang-and-or-offer-are-speaking-at-rise |access-date=2026-01-11 |website=RISE {{!}} “The largest tech gathering in Asia” |language=en}}</ref><ref>{{Cite news |date=2022-06-03 |title=ריקו מונעת ממידע לדלוף בארגונים ומגייסת 30 מיליון... |url=https://m.tech12.co.il/index-startups/Article-1d4ae5069ba2181026.htm |archive-url= |archive-date= |access-date=2026-01-05 |work=tech12}}</ref><ref>{{Cite web |last=CheckId |title=אוניברסיטת רייכמן (חל"צ) / REICHMAN UNIVERSITY (CC) - 511936759 |url=https://www.checkid.co.il/company/%D7%90%D7%95%D7%A0%D7%99%D7%91%D7%A8%D7%A1%D7%99%D7%98%D7%AA-%D7%A8%D7%99%D7%99%D7%9B%D7%9E%D7%9F-(%D7%97%D7%9C~%D7%A6)-K58g0x6-511936759/#:~:text=%D7%94%D7%A6%D7%92%20%D7%A2%D7%95%D7%93 |access-date=2026-01-05 |website=www.checkid.co.il |language=he}}</ref>

== Recognition == Offer has been featured in TheMarker (2015), Globes (2017), and Ice (2021) lists of promising young leaders under the age of 40. He was also included in the list of Top 100 Influencers in the Israeli High Tech, Geektime (2015).<ref>{{Cite news |title=הצעירים המבטיחים של כל הזמנים |url=https://www.themarker.com/magazine/2019-09-01/ty-article-static/0000017f-e12a-d568-ad7f-f36b47170000 |archive-url=https://web.archive.org/web/20241215172021/https://www.themarker.com/magazine/2019-09-01/ty-article-static/0000017f-e12a-d568-ad7f-f36b47170000 |archive-date=2024-12-15 |access-date=2026-01-05 |work=themarker |language=he |url-status=live }}</ref><ref>{{Cite web |title=אור עופר-G40 - ארבעים הצעירים המבטיחים 2017 - גלובס |url=https://www.globes.co.il/news/sparticle.aspx?did=1001216701 |access-date=2026-01-05 |website=Globes}}</ref><ref>{{Cite web |date=2015-06-04 |title="הרגע המכונן היה הכתבה ב-CNET: הרעיון הופץ, השרתים קרסו וחיינו השתנו לעד" |url=https://www.ice.co.il/advertising-marketing/news/article/409113 |access-date=2026-01-05 |website=Ice |language=he}}</ref><ref>{{Cite web |title=100 האנשים המשפיעים בהייטק הישראלי |url=https://archive.today/20160623212855/http://www.geektime.co.il/influencers/2015-top-100-influencers/ |website=Geektime |via=archive.today}}</ref>

== Personal life == Offer lives in Kfar Shmaryahu with his wife and three children.<ref name=":1" />

== References ==

{{reflist}}

== External links == * [https://www.linkedin.com/in/oroffer/ Or Offer], LinkedIn * [https://www.similarweb.com/corp/leadership/?_gl=1*1tzhrnc*_up*MQ..*_ga*ODE1MTk3NDExLjE3NjcxNzMzNzg.*_ga_V5DSP51YD0*czE3NjcxNzMzNzckbzEkZzAkdDE3NjcxNzMzNzckajYwJGwwJGg1MzQ1ODI5Mjc Or Offer], Similarweb * [https://techcrunch.com/2020/10/27/similarweb-raises-120m-for-its-ai-based-market-intelligence-platform-for-sites-and-apps/ Similarweb raises $120M for its AI-based market intelligence platform for sites and apps], TechCrunch * [https://www.calcalistech.com/ctechnews/article/3n1ybj522 Similarweb CEO: "It’s an employers' market, and they want employees to return to work from the office”], Calcalist * [https://www.forbes.com/sites/omribarzilay/2017/11/09/meet-similarweb-one-of-wall-streets-secret-weapons/ How SimilarWeb Helps Investors Make Decisions About Their Portfolio], Forbes * [https://irishtechnews.ie/similarweb-global-leader-in-digital-analytics-exclusive-interview-with-or-offer-ceo/ Similarweb global leader in digital analytics. Exclusive interview with Or Offer CEO], Irish Tech News * [https://www.youtube.com/watch?v=3sZAU1QHy5Q Or Offer at NOAH17 Berlin], YouTube

Category:Entrepreneurship by country Category:Israel {{DEFAULTSORT:Offer, Or}} Category:1983 births Category:Living people