Exhibit 99.1

ECOLAB INC.

SUPPLEMENTAL REPORTABLE SEGMENT INFORMATION

AND NON-GAAP RECONCILIATION

(unaudited)


Year ended December 31 (millions)	2025				2024
			Fixed				Fixed
			Currency				Currency
	Values at		Rate	Values at	Values at		Rate	Values at
	2025 Rates	Other	Change	2026 Rates	2025 Rates	Other	Change	2026 Rates
Net Sales
Global Water	$7,679.9	$ -	$427.8	$8,107.7	$7,483.4	$ -	$420.4	$7,903.8
Global Institutional & Specialty	5,962.0	-	202.8	6,164.8	5,979.4	-	207.9	6,187.3
Global Pest Elimination	1,219.2	-	39.6	1,258.8	1,140.1	-	37.7	1,177.8
Global Life Sciences	706.1	-	61.0	767.1	670.5	-	59.4	729.9
Subtotal at fixed currency rates	15,567.2	-	731.2	16,298.4	15,273.4	-	725.4	15,998.8
Effect of foreign currency translation	514.0	-	(731.2)	(217.2)	468.0	-	(725.4)	(257.4)
Total reported GAAP net sales	$16,081.2	$ -	$ -	$16,081.2	$15,741.4	$ -	$ -	$15,741.4

Cost of Sales
Global Water	$4,585.9	($2.3)	$254.5	$4,838.1	$4,470.9	($1.2)	$246.9	$4,716.6
Global Institutional & Specialty	2,977.7	0.7	109.6	3,088.0	3,131.0	0.8	113.6	3,245.4
Global Pest Elimination	686.3	0.1	21.4	707.8	639.8	0.1	20.2	660.1
Global Life Sciences	382.6	1.5	29.0	413.1	382.6	0.3	30.4	413.3
Corporate	7.7	-	-	7.7	5.2	-	0.1	5.3
Total at fixed currency rates	$8,640.2	$ -	$414.5	$9,054.7	$8,629.5	$ -	$411.2	$9,040.7

Selling, General and Administrative Expenses
Global Water	$1,830.1	$3.1	$78.9	$1,912.1	$1,805.3	$4.3	$80.7	$1,890.3
Global Institutional & Specialty	1,626.5	(1.3)	53.5	1,678.7	1,646.2	(2.8)	53.8	1,697.2
Global Pest Elimination	295.8	0.4	10.2	306.4	290.6	(0.1)	9.9	300.4
Global Life Sciences	202.8	(2.2)	9.3	209.9	196.1	(1.4)	9.5	204.2
Corporate	195.2	-	4.2	199.4	195.6	-	4.2	199.8
Total at fixed currency rates	$4,150.4	$ -	$156.1	$4,306.5	$4,133.8	$ -	$158.1	$4,291.9

Special (Gains) and Charges
Corporate	$150.3	$ -	$ -	$150.3	($188.7)	$ -	$ -	($188.7)
Total at fixed currency rates	$150.3	$ -	$ -	$150.3	($188.7)	$ -	$ -	($188.7)


Operating Income
Global Water	$1,263.9	($0.8)	$94.4	$1,357.5	$1,207.2	($3.1)	$92.8	$1,296.9
Global Institutional & Specialty	1,357.8	0.6	39.7	1,398.1	1,202.2	2.0	40.5	1,244.7
Global Pest Elimination	237.1	(0.5)	8.0	244.6	209.7	-	7.6	217.3
Global Life Sciences	120.7	0.7	22.7	144.1	91.8	1.1	19.5	112.4
Corporate	(353.2)	-	(4.2)	(357.4)	(12.1)	-	(4.3)	(16.4)
Subtotal at fixed currency rates	2,626.3	-	160.6	2,786.9	2,698.8	-	156.1	2,854.9
Effect of foreign currency translation	111.3	-	(160.6)	(49.3)	103.6	-	(156.1)	(52.5)
Total reported GAAP operating income	$2,737.6	$ -	$ -	$2,737.6	$2,802.4	$ -	$ -	$2,802.4

Notes:

We evaluate the performance of our non-U.S. dollar functional currency international operations based on fixed currency exchange rates, which eliminate the impact of exchange rate fluctuations on our international operations. Fixed currency amounts are updated annually at the beginning of each year based on translation into U.S. dollars at foreign currency exchange rates established by management, with all periods presented using such rates. The "Fixed Currency Rate Change” columns in the table above reflect international operations at fixed currency exchange rates established by management at the beginning of 2026, rather than the 2025 established rates. The difference between the fixed currency exchange rates and the actual currency exchange rates is reported within the "Effect of foreign currency translation" rows in the table above for net sales and operating income.