ABB Ltd

Transaction in Own Shares • Sep 25, 2025

ZURICH, SWITZERLAND, SEPTEMBER 25, 2025

ABB share buybacks

September 18, 2025 – September 24, 2025

During the period September 18, 2025, to September 24, 2025, ABB repurchased a total of 222'564 shares as part of its share buyback program announced on February 7, 2025.

The buyback program is being carried out in accordance with the Swiss Ordinance on Financial Market Infrastructures and Market Conduct in Securities and Derivatives Trading (FMIO), the Market Abuse Regulation (EU) No 596/2014 ("MAR") and the Commission Delegated Regulation (EU) No 2016/1052 (the "Safe Harbour Regulation").

Date	Aggregated daily volume (number of shares)	Daily weighted average share price (CHF)	Daily buyback amount (CHF)
18-Sep-25	47'000	55.8977	2'627'191.95
19-Sep-25	22'928	55.9759	1'283'414.29
22-Sep-25	39'136	56.3658	2'205'931.28
23-Sep-25	50'500	57.2384	2'890'540.01
24-Sep-25	63'000	56.7473	3'575'079.71

All share purchases above have been carried out on a separate trading line on the SIX Swiss Exchange by a bank, on behalf of ABB. A full breakdown of the transactions pursuant to article 5.3 of MAR and article 2.3 of the Safe Harbour Regulation is attached to this announcement. The bank makes its trading decisions concerning the timing of share repurchases independently of ABB, within some defined parameters.

The total number of ABB Ltd shares which have been bought back within the current share buyback program from February 10, 2025, to and including September 24, 2025, is 16'884'474 shares.

Additional information is available on ABB's investor relations website site at https://global.abb/group/en/investors/investor-and-shareholder-resources/share-buybacks/2025

ABB is a global technology leader in electrification and automation, enabling a more sustainable and resource-efficient future. By connecting its engineering and digitalization expertise, ABB helps industries run at high performance, while becoming more efficient, productive and sustainable so they outperform. At ABB, we call this 'Engineered to Outrun'. The company has over 140 years of history and around 110,000 employees worldwide. ABB's shares are listed on the SIX Swiss Exchange (ABBN) and Nasdaq Stockholm (ABB). www.abb.com

— For more information please contact:

Media Relations Phone: +41 43 317 71 11 Email: media.relations@ch.abb.com

Investor Relations Phone: +41 43 317 71 11 Email: investor.relations@ch.abb.com ABB Ltd Affolternstrasse 44 8050 Zurich Switzerland

Appendix

Detailed individual transaction information:

All share purchases below were completed on a separate trading line on the SIX Swiss Exchange (Bloomberg ticker for SIX Exchange: SE)

Date	Time (CET)	Volume	Price	Exchange	19-Sep-25	09:32:52	1,000	55.92	SE
18-Sep-25	09:03:34	494	55.84	SE	19-Sep-25	09:32:52	1,000	55.92	SE
18-Sep-25	09:03:34	1,506	55.84	SE	19-Sep-25	09:49:45	500	55.94	SE
18-Sep-25	09:08:07	500	55.84	SE	19-Sep-25	10:11:28	577	56.14	SE
18-Sep-25	09:16:18	618	55.86	SE	19-Sep-25	10:11:28	1,000	56.14	SE
18-Sep-25	09:18:27	772	55.86	SE	19-Sep-25	10:29:54	715	56.16	SE
18-Sep-25	09:33:00	1,001	55.96	SE	19-Sep-25	10:46:33	694	56.22	SE
18-Sep-25	09:33:31	1,000	55.96	SE	19-Sep-25	10:59:08	654	56.16	SE
18-Sep-25	09:56:21	925	56.18	SE	19-Sep-25	11:10:22	1,000	56.1	SE
18-Sep-25	10:06:35	860	56.12	SE	19-Sep-25	11:25:29	500	56.1	SE
18-Sep-25	10:12:24	2,000	56.14	SE	19-Sep-25	11:25:29	1,000	56.1	SE
18-Sep-25	10:41:25	1,140	56.12	SE	19-Sep-25	11:51:59	1,000	56	SE
18-Sep-25	10:45:48	2,000	56.14	SE	19-Sep-25	12:10:24	1,000	55.78	SE
18-Sep-25	11:24:49	2,000	56.1	SE	19-Sep-25	12:37:42	888	55.9	SE
18-Sep-25	11:33:11	973	56.1	SE	19-Sep-25	13:02:17	580	55.9	SE
18-Sep-25	12:02:18	923	56.08	SE	19-Sep-25	13:13:19	1,000	55.92	SE
18-Sep-25	12:18:04	2,000	56.14	SE	19-Sep-25	13:36:23	1,000	55.92	SE
18-Sep-25	13:00:00	1,229	55.8	SE	19-Sep-25	13:48:47	1,121	55.88	SE
18-Sep-25	13:00:29	1,000	55.84	SE	19-Sep-25	14:25:27	800	55.94	SE
18-Sep-25	13:41:41	795	55.98	SE	19-Sep-25	14:35:06	669	55.9	SE
18-Sep-25	13:41:41	1,205	55.98	SE	19-Sep-25	14:43:36	1,000	55.96	SE
18-Sep-25	14:16:50	1,000	55.88	SE	19-Sep-25	15:00:35	1,000	56.06	SE
18-Sep-25	14:30:56	716	55.9	SE	19-Sep-25	15:00:35	800	56.06	SE
18-Sep-25	14:38:12	535	55.8	SE	22-Sep-25	09:08:31	127	56.3	SE
18-Sep-25	14:38:12	1,465	55.8	SE	22-Sep-25	09:08:31	373	56.3	SE
18-Sep-25	15:00:36	1,000	55.78	SE	22-Sep-25	09:08:33	500	56.28	SE
18-Sep-25	15:00:36	972	55.78	SE	22-Sep-25	09:08:43	1,000	56.28	SE
18-Sep-25	15:26:21	665	55.7	SE	22-Sep-25	09:11:48	500	56.38	SE
18-Sep-25	15:31:11	576	55.64	SE	22-Sep-25	09:20:02	500	56.28	SE
18-Sep-25	15:32:20	1,000	55.64	SE	22-Sep-25	09:23:25	1,000	56.24	SE
18-Sep-25	15:35:16	2,000	55.64	SE	22-Sep-25	09:32:31	500	56.26	SE
18-Sep-25	15:41:00	2,000	55.62	SE	22-Sep-25	09:36:47	1,000	56.18	SE
18-Sep-25	15:52:28	904	55.74	SE	22-Sep-25	09:45:58	500	56.14	SE
18-Sep-25	15:52:28	1,096	55.74	SE	22-Sep-25	09:49:02	177	56.14	SE
18-Sep-25	16:02:16	1,052	55.7	SE	22-Sep-25	09:51:05	500	56.24	SE
18-Sep-25	16:03:42	96	55.74	SE	22-Sep-25	09:55:24	500	56.3	SE
18-Sep-25	16:07:07	665	55.8	SE	22-Sep-25	10:00:35	174	56.44	SE
18-Sep-25	16:10:56	739	55.76	SE	22-Sep-25	10:00:35	500	56.44	SE
18-Sep-25	16:14:09	1,000	55.84	SE	22-Sep-25	10:02:38	149	56.44	SE
18-Sep-25	16:19:22	1,025	55.9	SE	22-Sep-25	10:05:52	500	56.4	SE
18-Sep-25	16:35:36	1,000	55.92	SE	22-Sep-25	10:10:54	1,000	56.42	SE
18-Sep-25	16:35:48	1,000	55.92	SE	22-Sep-25	10:13:00	1,000	56.42	SE
18-Sep-25	16:35:49	439	55.92	SE	22-Sep-25	10:30:09	1,000	56.2	SE
18-Sep-25	16:35:49	1,561	55.92	SE	22-Sep-25	10:43:59	1,000	56.28	SE
18-Sep-25	16:47:29	1,553	55.82	SE	22-Sep-25	10:44:00	1,000	56.28	SE
19-Sep-25	09:03:19	666	55.88	SE	22-Sep-25	10:57:47	500	56.28	SE
19-Sep-25	09:03:26	1,000	55.92	SE	22-Sep-25	11:03:05	500	56.38	SE
19-Sep-25	09:04:18	500	55.86	SE	22-Sep-25	11:03:05	500	56.38	SE
19-Sep-25	09:16:48	764	55.78	SE	22-Sep-25	11:03:05	1,000	56.38	SE
19-Sep-25	09:19:27	500	55.8	SE	22-Sep-25	11:23:00	500	56.3	SE

22 -Sep -25	11:28:51	500	56.32	SE	23 -Sep -25	10:39:02	500	57.52	SE
22 -Sep -25	11:32:40	500	56.32	SE	23 -Sep -25	10:39:02	1,000	57.52	SE
22 -Sep -25	11:37:57	3	56.28	SE	23 -Sep -25	10:55:18	500	57.48	SE
22 -Sep -25	11:39:25	1,000	56.24	SE	23 -Sep -25	10:59:22	500	57.48	SE
22 -Sep -25	11:50:00	1,000	56.24	SE	23 -Sep -25	11:05:02	500	57.44	SE
22 -Sep -25	11:59:33	1,000	56.2	SE	23 -Sep -25	11:13:35	500	57.46	SE
22 -Sep -25	11:59:33	1,000	56.2	SE	23 -Sep -25	11:15:20	500	57.44	SE
22 -Sep -25	12:15:12	497	56.28	SE	23 -Sep -25	11:16:45	500	57.44	SE
22 -Sep -25	12:29:17	500	56.38	SE	23 -Sep -25	11:31:05	1,000	57.38	SE
22 -Sep -25	12:37:24	1,000	56.42	SE	23 -Sep -25	11:38:58	500	57.38	SE
22 -Sep -25	12:37:24	500	56.42	SE	23 -Sep -25	11:45:26	1,500	57.38	SE
22 -Sep -25	12:54:10	64	56.38	SE	23 -Sep -25	12:00:30	437	57.32	SE
22 -Sep -25	12:58:31	436	56.38	SE	23 -Sep -25	12:00:30	63	57.32	SE
22 -Sep -25	12:59:59	500	56.36	SE	23 -Sep -25	12:00:30	500	57.32	SE
22 -Sep -25	13:14:45	436	56.4	SE	23 -Sep -25	12:00:31	1,000	57.32	SE
22 -Sep -25	13:22:07	500	56.44	SE	23 -Sep -25	12:28:46	500	57.14	SE
22 -Sep -25	13:29:56	1,000	56.42	SE	23 -Sep -25	12:28:46	1,000	57.14	SE
22 -Sep -25	13:32:26	500	56.42	SE	23 -Sep -25	12:51:16	500	57.08	SE
22 -Sep -25	13:50:30	500	56.42	SE	23 -Sep -25	12:58:28	500	57.02	SE
22 -Sep -25	13:51:44	500	56.4	SE	23 -Sep -25	12:58:29	500	56.9	SE
22 -Sep -25	13:53:13	500	56.4	SE	23 -Sep -25	13:12:54	1,000	57	SE
22 -Sep -25	14:10:35	500	56.54	SE	23 -Sep -25	13:31:07	500	57.04	SE
22 -Sep -25	14:11:55	500	56.52	SE	23 -Sep -25	13:36:14	500	57.04	SE
22 -Sep -25	14:11:55	1,000	56.52	SE	23 -Sep -25	13:44:52	500	57.04	SE
22 -Sep -25	14:31:47	475	56.58	SE	23 -Sep -25	13:50:34	1,000	57.06	SE
22 -Sep -25	14:31:47	25	56.58	SE	23 -Sep -25	13:50:35	500	57.06	SE
22 -Sep -25	14:31:48	500	56.58	SE	23 -Sep -25	13:50:35	500	57.06	SE
22 -Sep -25	14:37:55	500	56.56	SE	23 -Sep -25	13:57:05	500	57.06	SE
22 -Sep -25	14:38:00	91	56.52	SE	23 -Sep -25	14:22:57	1,000	57.2	SE
22 -Sep -25	14:38:05	409	56.52	SE	23 -Sep -25	14:32:02	1,000	57.14	SE
22 -Sep -25	14:47:42	500	56.56	SE	23 -Sep -25	14:36:03	500	57.12	SE
22 -Sep -25	14:52:12	1,000	56.56	SE	23 -Sep -25	14:36:04	500	57.12	SE
22 -Sep -25	15:01:27	500	56.56	SE	23 -Sep -25	14:49:43	500	57.16	SE
22 -Sep -25	15:01:33	700	56.52	SE	23 -Sep -25	14:52:26	1,000	57.14	SE
22 -Sep -25	15:11:32	1,000	56.52	SE	23 -Sep -25	15:02:03	1,500	57.2	SE
22 -Sep -25	15:30:01	500	56.38	SE	23 -Sep -25	15:15:37	1,000	57.2	SE
22 -Sep -25	15:30:01	500	56.38	SE	23 -Sep -25	15:15:37	500	57.2	SE
22 -Sep -25	15:30:01	500	56.38	SE	23 -Sep -25	15:15:37	500	57.2	SE
22 -Sep -25	15:30:01	1,000	56.38	SE	23 -Sep -25	15:19:34	500	57.18	SE
23 -Sep -25	09:01:59	500	57.1	SE	23 -Sep -25	15:19:35	500	57.18	SE
23 -Sep -25	09:01:59	500	57.1	SE	23 -Sep -25	15:19:35	1,000	57.18	SE
23 -Sep -25	09:01:59	1,000	57.1	SE	23 -Sep -25	15:26:10	1,000	57.18	SE
23 -Sep -25	09:02:39	500	57.02	SE	23 -Sep -25	16:00:29	500	57.22	SE
23 -Sep -25	09:04:06	500	57.08	SE	23 -Sep -25	16:00:30	500	57.22	SE
23 -Sep -25	09:08:14	500	57.08	SE	23 -Sep -25	16:00:30	500	57.22	SE
23 -Sep -25	09:09:28	2,000	57.1	SE	23 -Sep -25	16:00:30	500	57.22	SE
23 -Sep -25	09:24:37	500	57.32	SE	23 -Sep -25	16:00:59	500	57.22	SE
23 -Sep -25	09:33:33	500	57.4	SE	23 -Sep -25	16:00:59	500	57.22	SE
23 -Sep -25	09:39:56	500	57.42	SE	23 -Sep -25	16:01:00	500	57.22	SE
23 -Sep -25	09:41:22	500	57.44	SE	23 -Sep -25	16:01:04	500	57.22	SE
23 -Sep -25	09:44:12	500	57.4	SE	23 -Sep -25	16:01:46	500	57.22	SE
23 -Sep -25	09:52:01	500	57.42	SE	23 -Sep -25	16:01:47	500	57.22	SE
23 -Sep -25	09:55:39	500	57.34	SE	23 -Sep -25	16:01:50	500	57.22	SE
23 -Sep -25	10:03:16	500	57.5	SE	23 -Sep -25	16:01:50	500	57.22	SE
23 -Sep -25	10:07:36	500	57.46	SE	23 -Sep -25	16:01:50	500	57.22	SE
23 -Sep -25	10:08:00	1,000	57.5	SE	23 -Sep -25	16:01:51	500	57.22	SE
23 -Sep -25	10:16:41	500	57.52	SE	23 -Sep -25	16:01:51	500	57.22	SE
23 -Sep -25	10:30:22	1,000	57.46	SE	23 -Sep -25	16:01:52	500	57.22	SE
23 -Sep -25	10:38:21	500	57.54	SE	23 -Sep -25	16:03:43	1,000	57.18	SE

09:05:57	500	56.68	SE	24 -Sep -25	15:09:38	500	56.64	SE
								SE
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								SE
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								SE
								SE
								SE
								SE
								SE
								SE
								SE
09:55:24	500	56.94	SE	24 -Sep -25	15:51:25	500	56.62	SE
09:57:57	500	56.94	SE	24 -Sep -25	15:54:01	500	56.64	SE
10:00:05	500	57.06	SE	24 -Sep -25	15:55:05	1,000	56.64	SE
10:07:13	500	57.02	SE	24 -Sep -25	15:59:37	500	56.62	SE
10:12:16	1,000	57.02	SE	24 -Sep -25	16:02:02	449	56.62	SE
								SE
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11:28:39	168	56.8	SE	24 -Sep -25	16:25:13	1,000	56.68	SE
11:37:54	500	56.76	SE	24 -Sep -25	16:28:00	500	56.74	SE
11:39:49	1,000	56.74	SE	24 -Sep -25	16:52:20	500	56.76	SE
11:41:47	500	56.74	SE	24 -Sep -25	16:53:01	435	56.76	SE
11:53:54	1,000	56.84	SE	24 -Sep -25	16:53:01	500	56.76	SE
12:09:15	500	56.88	SE	24 -Sep -25	16:53:01	500	56.76	SE
								SE
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13:59:13	500	56.64	SE	24 -Sep -25	16:55:24	18	56.76	SE
14:02:21	500	56.64	SE	24 -Sep -25	16:55:24	482	56.76	SE
14:03:53	1,000	56.68	SE	24 -Sep -25	16:56:04	507	56.74	SE
14:11:46	459	56.64	SE
14:19:30	500	56.66	SE
14:21:03	1,500	56.7	SE
14:40:09	1,000	56.78	SE
		56.6	SE
	09:05:57 09:05:57 09:11:27 09:12:18 09:17:00 09:20:08 09:23:29 09:30:49 09:33:45 09:33:45 09:40:35 09:51:33 10:22:04 10:22:17 10:24:41 10:35:57 10:50:16 10:56:27 11:06:02 11:06:02 11:11:35 11:16:11 11:20:35 11:24:33 11:25:46 12:09:15 12:29:30 12:43:18 12:46:12 12:59:59 13:00:00 13:11:09 13:14:30 13:36:17 13:36:17 13:44:18 13:58:52 14:47:50 14:56:47 14:58:53	500 1,000 500 500 500 500 500 500 500 500 500 500 40 1,000 500 1,000 1,000 1,000 256 244 500 500 417 1,000 83 1,000 1,000 500 500 418 82 386 1,500 414 86 32 500 1,000 500 1,000	56.68 56.68 56.76 56.74 56.6 56.62 56.72 56.74 56.76 56.76 56.82 56.96 56.96 56.96 56.92 56.82 56.7 56.64 56.72 56.72 56.72 56.74 56.82 56.78 56.82 56.88 56.92 56.96 57 56.88 56.88 56.86 56.88 56.7 56.7 56.66 56.66 56.7 56.6	SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE	24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25 24 -Sep -25	15:14:15 15:14:28 15:21:39 15:31:34 15:36:39 15:36:40 15:36:40 15:36:40 15:40:35 15:40:35 15:42:29 15:47:43 16:02:03 16:02:24 16:03:35 16:03:53 16:05:02 16:07:52 16:08:03 16:08:46 16:10:46 16:10:46 16:13:43 16:13:43 16:20:58 16:53:02 16:53:11 16:53:30 16:53:37 16:53:39 16:53:41 16:54:04 16:54:04 16:54:09 16:54:09 16:54:10 16:54:16	500 1,000 500 1,500 500 500 500 500 198 302 1,500 1,000 51 500 108 500 500 86 60 1,000 56 1,000 500 1,444 1,000 500 500 500 500 331 293 189 18 466 34 388 500	56.64 56.64 56.64 56.76 56.72 56.72 56.72 56.72 56.72 56.72 56.74 56.68 56.62 56.62 56.58 56.6 56.6 56.66 56.66 56.68 56.68 56.68 56.7 56.7 56.7 56.76 56.76 56.76 56.76 56.76 56.76 56.76 56.76 56.76 56.76 56.76 56.76