Exhibit 99.1

13 April 2023

Tremor International Ltd

("Tremor" or the "Company")

Block Admission Application

Tremor International Ltd. (AIM/NASDAQ: TRMR) ("Tremor" or the "Company"), a global leader in Video, Data, and Connected TV ("CTV") advertising offering an end-to-end technology platform that enables advertisers to optimize their campaigns and media partners to maximize yield on their digital advertising inventory, announces that application has been made to the London Stock Exchange plc for a block admission of 4,000,000 ordinary shares of NIS0.01 each in the capital of the Company ("New Ordinary Shares") to be admitted to trading on AIM ("Admission"). It is expected that Admission will occur on or around the 17 April 2023.

These New Ordinary Shares shall be issued and allotted from time to time pursuant to the exercise of share options and the vesting of restricted share units (RSUs), performance share units (PSUs) and restricted shares under the Company's Global Share Incentive Plan (2011), the Company's 2017 Equity Incentive Plan and the New Taptica Management Incentive Scheme and RhythmOne Plan (2019). The New Ordinary Shares, when issued, shall rank equally with the Company's existing issued ordinary shares.

For further information please contact:

Tremor International Ltd Billy Eckert, Senior Director Investor Relations	ir@tremorinternational.com
KCSA (US Investor Relations) David Hanover	tremorir@kcsa.com
Vigo Consulting (UK Financial PR and Investor Relations) Jeremy Garcia Kate Kilgallen	tremor@vigoconsulting.com Tel: +44 20 7390 0230
finnCap Ltd Jonny Franklin-Adams / Charlie Beeson / George Dollemore (Corporate Finance) Tim Redfern / Harriet Ward (ECM)	Tel: +44 20 7220 0500
Stifel Nicolaus Europe Limited Fred Walsh Alain Dobkin Nick Adams Richard Short	Tel: +44 20 7710 7600

About Tremor International

Tremor is a global company offering an end-to-end technology advertising platform, operating across three core capabilities - Video, Data and CTV. Tremor's unique approach is centered on offering a full stack of end-to-end solutions which provides it with a major competitive advantage within the video advertising ecosystem.

Tremor Video helps advertisers deliver impactful brand stories across all screens through the power of innovative video technology combined with advanced audience data and captivating creative content. Tremor Video's innovative video advertising technology has offerings in CTV, in-stream, out-stream and in-app. To learn more, visit www.tremorvideo.com

Amobee optimizes outcomes for advertisers and media companies, while providing a better consumer experience. Its platform assists customers by furthering their audience development, optimizing their cross-channel performance across all TV, connected TV, and digital media, and driving new customer growth through detailed analytics and reporting. To learn more, visit www.amobee.com

Unruly, the media side of Tremor, drives real business outcomes in multiscreen advertising. Its programmatic platform efficiently and effectively delivers performance, quality, and actionable data to demand and supply-focused clients and partners. Tremor has a meaningful number of direct integrations with premium publishers, unique demand relationships with a variety of advertisers and privileged access to News Corp inventory. Unruly connects to the world's largest DSPs and is compatible with most Ad Age top 100 brands. To learn more, visit www.unruly.co

Tremor is headquartered in Israel and maintains offices throughout the United States, Canada, Europe, Asia-Pacific and is traded on the London Stock Exchange (AIM: TRMR) and NASDAQ: (TRMR).

For more information, visit: https://www.tremorinternational.com/