Kosteliz & Co. law office is one of Israel’s leading law firms in the field of legal representation.
The firm fosters leading and talented lawyers in their fields, who have comprehensive experience
and hold advanced academic degrees.
The firm’s team specializes in a diverse range of legal fields and provides a personal, professional and loyal service.

About us

“Litigation boutique Kosteliz & Co., Law Office is acting for key parties in high-profile public corruption matters, cross-border bribery and money laundering cases in the private sector, and various other securities, tax, and unjust enrichment claims. Department head Yaron Kosteliz has extensive experience of administrative litigation, military law, and complex civil and criminal litigation. Indeed, Kosteliz is a key legal adviser to Benjamin and Sara Netanyahu. In addition to his standout public sector work, Kosteliz is acting in a major bribery case in the defence sector, a cross-border bribery case in the real estate and construction sector, a tax evasion and aiding and abetting matter in the diamond industry, and several securities violations matters. Kosteliz & Co., Law Office is routinely involved in complex civil and commercial claims, spanning white-collar and tax claims, shareholder and partnership disputes, real estate and planning disputes, and bankruptcy-related litigation. Firm founder Yaron Kosteliz enjoys a market-leading reputation in the white-collar space, but is also recognised for his ability to handle high-value commercial litigation for large corporates including Delek Drilling and EY Israel.”

News & Events


תקדים: ביהמ"ש ביטל כתב אישום נגד רמי לוי תקשורת ובכיריה בשל איחור בהגשה


המאפיות נגד המדינה: עתרו לבג"ץ להעלות שוב את מחירי הלחם ב-5%

Practice areas

White collar crimes

Civil-commercial litigation

Administrative law

Real-estate transactions

Employment law

Planning and construction law

Military law

Our Team

The founder of the firm, Adv. Yaron Kosteliz, is “thought to be one of the stars in the ‘white collar’ crime sector in Israel” (Globes, 9.3.2014), and his clients consist of key persons in the world of business and politics in Israel. By the time he was 29 years old, Adv. Kosteliz was rated in the first list of “40 by 40” in G magazine, belonging to Globes newspaper (2006), and was included in the lists of exceptional lawyers in “The Marker” newspaper (2008), “Ma’ariv” (2011 and 2013), and on the website “Nana10” (2014).

Adv. Yoav Segal is a founder and managing partner at Kosteliz & Co law office. During the last two decades, Adv. Segal’s work consisted of representation in extensive litigation cases, including representing clients in civil disputes, administrative petitions, class actions, “white collar” crimes and disciplinary proceedings. In addition to handling litigation matters, Adv. Segal managed diverse real-estate transactions amounting to hundreds of millions of New Israeli Shekels, including commercial real-estate transactions (purchase, sale and lease of real-estate investment) and private real-estate transactions (luxury homes). 

More about our team

Among the firm’s clients

Prime Minister Benjamin Netanyahu

Mrs. Sara Netanyahu

Mr. Shlomo Dery

The Minister Avigdor Liberman

Mr. Michael Chernoy

Mr. Modi Zandberg

Mr. Amos Luzon

Mr. Jacky Ben-Zaken

Rabbi Bakshi Doron

Mr. Shlomo Nehama

Mr. Shlomo Lahiani

Mr. Yossi Ben David

Mr. Ya’akov Efrati

Mr. Ilan Moreno

Mr. Eli Yitzhaki

Mr. Uriel Yitzhaki

Mr. Daniel Vaknin


Delek drilling

Housing and Construction Company

Kost Forer Gabbay & Kasierer (Ernst & Young (Israel))

Berman Bakery

Givat Shmuel Municipality

Jewish National Fund

The Israeli Land Development Corporation

Angel Bakeries

Dubek Ltd

Beit El’s Yeshiva complex

Ayalim Association

Gush Etzion Regional Council

The Ofra Settlement

Local Zebulon Planning and Building Committee