TAMRON continues to be selected as a constituent of "SOMPO Sustainability Index" for the 15th consecutive year | NEWS ROOM

Promoting ESG and sustainability management to achieve the 2035 Long-term Vision of "Capture, Measure, Connect — Creating a Healthier Future for People and Nature."

June 23, 2026 – Tamron Co., Ltd. (President & CEO: Shogo Sakuraba; Headquarters: Saitama City, Japan; “TAMRON”), a leading manufacturer of optics for diverse applications, announces it was selected as a constituent of the "SOMPO Sustainability Index," an index managed by SOMPO Asset Management Co., Ltd., for the 15th consecutive year since the index was launched in 2012.

◆Sompo Sustainability Index

・Incorporated Stocks: Approx. 300 stocks which show superior ESG evaluation based on proprietary research (Reviewed annually)
・Inception Date: August 2012

◆Japan Value Equity Sustainable Strategy

・Investment Style: Constructing the portfolio that tracks the active index "Sompo Sustainability Index"
・Smart Beta strategy which tracks an active index (Sompo Sustainability Index), created using both ESG evaluation and stock valuation
・Sophisticated proprietary evaluation system in collaboration with Sompo Risk Management, a leading company in Japan ESG research
・Diversified investment in stocks with high management quality, determine the stock weights in accordance with their intrinsic values
・Long-term investment style (buy-and-hold), unsusceptible to short term market price fluctuations

The review is based on the results of the annual ESG survey and evaluation conducted by SOMPO Risk Management Co., Ltd. TAMRON's continuous ESG initiatives were highly recognized, leading to its selection as a constituent again this year.

In February this year, TAMRON established its new Long-term Vision for 2035: "Capture, Measure, Connect — Creating a Healthier Future for People and Nature." Furthermore, on June 16, TAMRON formulated an outline of its next Medium-term Management Plan, "Value Up29" (covering the period from 2027 to 2029). Through this, the company has set forth a new direction for its ESG/Sustainability strategy aimed at enhancing long-term corporate value enhancement and strengthening the effectiveness of the Medium-term Management Plan*.

*For further details, please refer to the disclosure document below:
[URL] https://www.tamron.com/global/ir/upload_file/tdnrelease/7740_20260612569915_P01_.pdf

Going forward, TAMRON will continue to fulfill its responsibility as an optical specialist, aiming to contribute to the realization of a sustainable society and achieve a long-term enhancement of its corporate value.

◆About our Sustainability initiatives and business activities

・Sustainability ： https://www.tamron.com/global/sustainability/
・IR： https://www.tamron.com/global/ir/
・Long-term Vision / Medium-term Management Plan: https://www.tamron.com/global/ir/management/management_02.html