IDEMITSU KOSAN CO.,LTD.

Calendar Idemitsu Kosan Co.,Ltd.

Equities

5019

JP3142500002

Oil & Gas Refining and Marketing

Market Closed - Japan Exchange Other stock markets 14:30:00 20/05/2026 HKT			5-day change	1st Jan Change
1,374.50 ^JPY	-0.15%		-1.04%	+16.19%

04:47pm	Japan oil refiners expect to secure enough supply to replace Middle East crude for summer	RE
02:12pm	Japan oil refiners move to secure Middle East replacements for summer, industry official says	RE

Chart calendar Idemitsu Kosan Co.,Ltd.

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Upcoming events on Idemitsu Kosan Co.,Ltd.

24/06/2026	Annual General Meeting	Day
07/08/2026	Earnings release - Q1 2027

Past events on Idemitsu Kosan Co.,Ltd.

12/05/2026	Earnings presentation	14:30
12/05/2026	Board of Directors Meeting	Day
12/05/2026	Earnings presentation	Day
12/05/2026	Earnings release - Annual 2026
21/04/2026	Board of Directors Meeting	Day
10/02/2026	Earnings release - Q3 2026	Day
10/02/2026	Earnings presentation	14:30
11/11/2025	Earnings presentation	14:35
11/11/2025	Earnings release - Q2 2026	Day
11/11/2025	Board of Directors Meeting	Day
11/09/2025	Board of Directors Meeting	Day
08/08/2025	Earnings release - Q1 2026	Day
08/08/2025	Earnings presentation	14:35
25/06/2025	Annual General Meeting	09:00

Past dividends on Idemitsu Kosan Co.,Ltd.

30/03/2026	Ex-dividend date - 18 JPY	12:00
29/09/2025	Ex-dividend date - 18 JPY	12:00

Annual results

Fiscal Period	March	2023	2024	2025	2026	2027	2028
Net sales Million JPY	Released Forecast Spread	9 456 281 9 307 834 1.59%	8 719 201 8 632 031 1.01%	9 190 225 9 133 771 0.62%	8 105 891 8 177 400 -0.87%	8 244 800	9 382 750
EBITDA Million JPY	Released Forecast Spread	396 354 396 975 -0.16%	445 474 391 484 13.79%	257 844 328 600 -21.53%	317 184 252 946 25.4%	424 626	341 204
EBIT Million JPY	Released Forecast Spread	282 442 259 644 8.78%	346 316 276 709 25.16%	162 185 182 186 -10.98%	212 203 131 400 61.49%	224 700	217 900
Earnings before Tax (EBT) Million JPY	Released Forecast Spread	348 270 326 493 6.67%	326 754 288 651 13.2%	158 361 186 220 -14.96%	222 136 146 693 51.43%	321 620	243 800
Net income Million JPY	Released Forecast Spread	253 646 226 317 12.08%	228 518 200 852 13.77%	104 055 127 386 -18.32%	171 914 116 571 47.48%	171 300	172 700
EPS JPY	Released Forecast Spread	171 153 11.33%	161 140 15.08%	77,8 91,3 -14.75%	140 91,2 53.99%	142	150
Announcement Date		09/05/23	14/05/24	13/05/25	12/05/26

Quarterly results

Fiscal Period	September	2024 Q4	2025 Q1	2025 Q2	2025 S1	2025 Q3	2025 Q4	2026 Q1	2026 Q2	2026 S1	2026 Q3	2026 Q4	2027 Q1	2027 Q2	2027 S1	2027 Q3	2027 Q4
Net sales Million JPY	Released Forecast Spread	2 316 937 2 384 567 -2.84%	2 260 300 1 825 500 23.82%	2 243 736 1 990 300 12.73%	4 504 025 4 075 800 10.51%	2 372 439 2 031 650 16.77%	2 313 761 2 072 200 11.66%	1 843 035 1 671 100 10.29%	1 962 618 1 895 200 3.56%	3 805 653 3 438 900 10.66%	2 138 937 1 796 900 19.03%	2 261 667	2 474 900	2 838 400	4 076 400	2 693 250	2 921 500
EBIT Million JPY	Released Forecast Spread	52 616 -10 167 617.53%	122 500 45 900 166.88%	-25 181 21 900 -214.98%	97 330 135 950 -28.41%	25 945 22 850 13.54%	38 910 62 467 -37.71%	-21 015 -101 500 79.3%	46 859 29 233 60.29%	25 844 -66 000 139.16%	10 847 27 033 -59.88%	94 733	223 300	74 100	125 000	51 800	63 550
Earnings before Tax (EBT) Million JPY	Released Forecast Spread		136 215		130 768	36 130		-4 672		41 257	22 999		228 250	78 250	135 400	58 800	63 700
Net income Million JPY	Released Forecast Spread	-10 567 -36 150 70.77%	95 000 39 450 140.81%	4 420 26 300 -83.19%	99 442 118 200 -15.87%	28 012 12 350 126.82%	-23 399 2 600 -999.96%	5 243 -75 600 106.94%	30 832 36 750 -16.1%	36 075 -37 500 196.2%	16 503 26 850 -38.54%	63 367	44 900	51 100	96 000	37 000	38 300
EPS JPY	Released Forecast Spread		69,2		73,0	21,4		4,28		29,5	13,5
Announcement Date		14/05/24	06/08/24	12/11/24	12/11/24	12/02/25	13/05/25	08/08/25	11/11/25	11/11/25	10/02/26	-	-	-	-	-	-

Upcoming sector events for Idemitsu Kosan Co.,Ltd.

21/05/2026	IRPC	Earnings presentation	11:00
27/05/2026	MOTOR OIL HELLAS CORINTH REFINERIES S.A.	Earnings release - Q1 2026
28/05/2026	ORLEN SPÓLKA AKCYJNA	Earnings release - Q1 2026
28/05/2026	MOTOR OIL HELLAS CORINTH REFINERIES S.A.	Earnings presentation	22:30
02/06/2026	CALUMET, INC.	Présentation aux Actionnaires / Analystes	21:00
02/06/2026	CALUMET, INC.	Annual General Meeting	Day
04/06/2026	CVR ENERGY, INC.	Annual General Meeting	Day
04/06/2026	CVR ENERGY, INC.	Présentation aux Actionnaires / Analystes	23:00
09/06/2026	ORLEN SPÓLKA AKCYJNA	Annual General Meeting	17:00
17/06/2026	ORLEN SPÓLKA AKCYJNA	Ex-dividend date - 8 PLN	12:00

Past sector events for Idemitsu Kosan Co.,Ltd.

18/05/2026	ICAHN ENTERPRISES L.P.	Ex-dividend date - 0.5 USD	12:00
15/05/2026	BANGCHAK CORPORATION	Earnings release - Q1 2026
15/05/2026	BANGCHAK CORPORATION	Earnings presentation	10:00
15/05/2026	STAR PETROLEUM REFINING	Earnings release - Q1 2026
15/05/2026	STAR PETROLEUM REFINING	Earnings presentation	Day
14/05/2026	HELLENIQ ENERGY HOLDINGS S.A.	Earnings release - Q1 2026
14/05/2026	HELLENIQ ENERGY HOLDINGS S.A.	Earnings presentation	23:00
13/05/2026	HF SINCLAIR CORPORATION	Présentation aux Actionnaires / Analystes	21:30
13/05/2026	HF SINCLAIR CORPORATION	Annual General Meeting	21:30
12/05/2026	IRPC	Earnings release - Q1 2026

Quarterly revenue - Rate of surprise

Net sales - Rate of surprise

Annual profits - Rate of surprise

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