# Tokyo Ohka Kogyo lifts profit goal to ¥63.5B on AI photoresist boom *Annual net sales are projected to reach ¥300 billion, marking a 26.6% increase and achieving medium-term targets a year ahead of schedule.* **Published:** November 10, 2026 **By:** Kenji Sato **Section:** Semiconductors & AI Hardware — Japan **Format:** Breaking **Confidence:** medium **Source:** https://eastasiabrief.com/semiconductors/tokyo-ohka-kogyo-lifts-profit-goal-63-5b-ai-1303 **Publisher:** East Asia Brief (https://eastasiabrief.com/) --- ## What to know - TOK lifted 2026 operating profit target to ¥63.5 billion, up 34.0% year-on-year - TSMC accounts for 33.6% of TOK revenue across EUV and advanced packaging resists - Koriyama plant expansion begins output in late November 2026; fiscal year ends Dec. 31 ![A worker wearing cleanroom attire holds a digital tablet while inspecting automated equipment inside a manufacturing cleanroom. (AI-generated image)](https://eastasiabrief.com/media/2026-11-10-7707152c1800.webp) *A worker wearing cleanroom attire holds a digital tablet while inspecting automated equipment inside a manufacturing cleanroom. (AI-generated image)* Tokyo Ohka Kogyo raised its annual operating profit guidance by 4.8% on Nov. 10, 2026, as surging demand for artificial intelligence processors accelerated shipments of advanced extreme ultraviolet and packaging photoresists. Operating profit is now projected to hit ¥63.5 billion ($410 million) for the year ending Dec. 31, representing a 34.0% increase over the previous fiscal period, the company said in a regulatory filing to the Tokyo Stock Exchange. Net sales are forecast to reach ¥300 billion ($1.94 billion), an upward revision from the ¥291 billion projected in July. The new total marks a 26.6% annual increase and delivers a third consecutive year of record earnings. The upgraded guidance allows Tokyo Ohka Kogyo, known across the industry as TOK, to meet the financial targets of its three-year business roadmap a full year early. Management had set those operational benchmarks for the fiscal year ending December 2027. Ordinary profit is projected at ¥66.0 billion, up 33.9% from 2025, while net income attributable to owners of the parent is expected to rise 33.5% to ¥44.5 billion. Both figures represent historical highs for the Kanagawa-based supplier. The chemical manufacturer attributes the expansion to surging orders for lithography materials and high-purity process chemicals. Hyperscale data center operators continue to absorb specialized accelerators, requiring fabricators to run leading-edge lithography lines at elevated utilization rates. Taiwan Semiconductor Manufacturing Company, the largest customer for Tokyo Ohka Kogyo, accounted for 33.6% of company sales in 2025. Foundry clients have steadily expanded material procurement for both wafer patterning and advanced packaging. Front-end photolithography resists generate roughly 70% of Tokyo Ohka Kogyo's functional materials division. The company holds approximately 25% of the global semiconductor photoresist market and ranks as the top supplier in extreme ultraviolet formulations. Back-end packaging formulations make up slightly more than 20% of the division's revenue. Demand for thick-film plating resists, redistribution layer formulations and temporary wafer bonding materials has expanded alongside rising output of multi-die artificial intelligence modules. For the nine months ended Sept. 30, consolidated sales climbed 25.9% year-on-year to ¥217.52 billion. Nine-month operating profit reached ¥46.05 billion, advancing 44.4% compared with the same period a year earlier. The company based its revised second-half outlook on a currency benchmark of ¥155.0 per US dollar. It maintained an annual dividend forecast of ¥80 per share, marking nine consecutive years of payout growth. Supply chain pressure on photoresist manufacturers has tightened as contract foundries ramp commercial runs of 3-nanometer and 2-nanometer wafers. Extreme ultraviolet lithography requires higher chemical purity and tighter defect tolerances, raising the barriers to entry for rival chemical firms. To safeguard delivery schedules, Tokyo Ohka Kogyo completed construction of a ¥23 billion ($148 million) photoresist production facility at its Koriyama site in Fukushima Prefecture on Oct. 8. The automated manufacturing facility begins commercial operations later this month. The supplier has also deployed capital overseas to position chemical production closer to key regional fabs. Tokyo Ohka Kogyo invested $80.23 million in an advanced chemical facility in Pyeongtaek, South Korea, to supply memory and foundry lines. The official filing does not disclose specific shipment volumes for advanced packaging product lines, nor does it detail material allocation shares for foundry chip-on-wafer-on-substrate packaging lines. Commercial production at the Koriyama photoresist plant begins in late November. Tokyo Ohka Kogyo is scheduled to distribute its year-end dividend of ¥40 per share following the close of the fiscal year on Dec. 31. ## Impact map | Event | Korea | China | Japan | Global impact | | --- | --- | --- | --- | --- | | TOK profit upgrade and capacity ramp | Pyeongtaek facility secures high-purity chemical supply for domestic memory and foundry nodes | Leading-edge EUV resist lines remain out of reach for domestic foundries | TOK expands domestic production capacity with ¥23 billion Koriyama plant | AI packaging and advanced wafer lines secure tighter photoresist supply agreements | ## In this story - **Companies:** Tokyo Ohka Kogyo - **Tickers:** 4186.T, 2330.TW - **Impact:** Pricing, Capex, Supply Chain ## Primary sources 1. tok.co.jp 2. minkabu.jp 3. kabuyoho.jp 4. kabutan.jp 5. hdinresearch.com --- Cite as: East Asia Brief, "Tokyo Ohka Kogyo lifts profit goal to ¥63.5B on AI photoresist boom," November 10, 2026. https://eastasiabrief.com/semiconductors/tokyo-ohka-kogyo-lifts-profit-goal-63-5b-ai-1303