FORM 6-K

SECURITIES AND EXCHANGE COMMISSION

Washington D.C. 20549

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16

of the Securities Exchange Act of 1934

For September 23, 2021

Commission File Number: 001-34718

NatWest Markets Plc

RBS, Gogarburn, PO Box 1000

Edinburgh EH12 1HQ

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

   Form 20-F X Form 40-F ___

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):_________

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):_________

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes ___ No X

If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82- ________

The following information was issued as Company announcements in London, England and is furnished pursuant to General Instruction B to the General Instructions to Form 6-K: 

NatWest Group plc
23 September 2021
Transaction in Own Shares
NatWest Group plc (the 'Company' or 'NWG') announces today that it has purchased the following number of ordinary shares in the Company with a nominal value of £1 each ('Ordinary Shares') from UBS AG, London Branch ('UBS').
Aggregated information:
Date of purchase	Number of Ordinary Shares purchased	Highest price paid: (GBp)	Lowest price paid: (GBp)	Volume  weighted average price paid per share (GBp)	Venue
23 September 2021	776,982	216.60	213.70	214.9812	LSE
23 September 2021	0	0.00	0.00	0.0000	CHIX
23 September 2021	0	0.00	0.00	0.0000	BATE
Such purchases form part of the Company's existing share buyback programme and were effected pursuant to the instructions issued by the Company to UBS on 30 July 2021, as announced on 2 August 2021.
The Company intends to cancel the repurchased Ordinary Shares.
Following the settlement of the above transactions, NWG will hold 190,412,693 Ordinary Shares in treasury and have 11,454,530,248 Ordinary Shares in issue (excluding treasury shares).
Further information:
Investor Relations
+ 44 (0)207 672 1758
Media Relations
+44 (0)131 523 4205
Legal Entity Identifier: 2138005O9XJIJN4JPN90
Transaction details
In accordance with Article 5(1)(b) of Regulation (EU) No.596/2014 as it applies in the UK (Market Abuse Regulation), a full breakdown of the individual trades made by UBS on behalf of the Company as part of the buyback programme is detailed below:
Transaction Date	Time	Time Zone	Volume (shares)	Price (GBp)	Trading Venue	MatchID
23 September 2021	08:14:03	BST	8123	213.70	LSE	1607021
23 September 2021	08:19:27	BST	4141	214.10	LSE	1,618,948
23 September 2021	08:19:27	BST	560	214.10	LSE	1,618,946
23 September 2021	08:19:27	BST	3213	214.10	LSE	1,618,944
23 September 2021	08:24:35	BST	9204	214.40	LSE	1,629,038
23 September 2021	08:39:55	BST	8382	214.20	LSE	1,662,379
23 September 2021	08:44:17	BST	7075	214.20	LSE	1,673,459
23 September 2021	08:44:17	BST	1856	214.20	LSE	1,673,457
23 September 2021	08:48:03	BST	6543	214.20	LSE	1,682,575
23 September 2021	08:48:03	BST	2099	214.20	LSE	1,682,573
23 September 2021	08:48:03	BST	66	214.20	LSE	1,682,577
23 September 2021	08:51:31	BST	8946	215.00	LSE	1,691,572
23 September 2021	08:52:19	BST	8162	215.00	LSE	1,693,262
23 September 2021	08:52:47	BST	7770	214.90	LSE	1,694,396
23 September 2021	08:59:30	BST	4007	215.00	LSE	1,709,590
23 September 2021	08:59:30	BST	3820	215.00	LSE	1,709,588
23 September 2021	09:02:03	BST	8072	215.20	LSE	1,714,581
23 September 2021	09:06:45	BST	8477	215.20	LSE	1,721,570
23 September 2021	09:11:10	BST	2702	214.90	LSE	1,731,368
23 September 2021	09:11:10	BST	5302	214.90	LSE	1,731,370
23 September 2021	09:16:50	BST	8275	214.70	LSE	1,740,079
23 September 2021	09:26:32	BST	5498	214.40	LSE	1,754,183
23 September 2021	09:26:32	BST	1345	214.40	LSE	1,754,181
23 September 2021	09:26:32	BST	1500	214.40	LSE	1,754,178
23 September 2021	09:37:27	BST	7571	214.40	LSE	1,770,728
23 September 2021	09:45:22	BST	1723	214.30	LSE	1,784,741
23 September 2021	09:45:22	BST	6165	214.30	LSE	1,784,739
23 September 2021	09:55:12	BST	5241	214.30	LSE	1,803,849
23 September 2021	09:55:12	BST	2710	214.30	LSE	1,803,851
23 September 2021	10:01:28	BST	8436	214.30	LSE	1,814,224
23 September 2021	10:05:54	BST	1510	214.70	LSE	1,820,196
23 September 2021	10:05:54	BST	7393	214.70	LSE	1,820,194
23 September 2021	10:10:58	BST	2277	214.80	LSE	1,829,731
23 September 2021	10:10:58	BST	5342	214.80	LSE	1,829,729
23 September 2021	10:13:29	BST	7823	215.10	LSE	1,833,467
23 September 2021	10:15:02	BST	8946	215.10	LSE	1,836,439
23 September 2021	10:21:57	BST	6600	214.90	LSE	1,847,469
23 September 2021	10:21:57	BST	1530	214.90	LSE	1,847,471
23 September 2021	10:30:14	BST	8619	214.70	LSE	1,864,341
23 September 2021	10:36:53	BST	9025	214.60	LSE	1,877,858
23 September 2021	10:42:49	BST	234	214.60	LSE	1,887,895
23 September 2021	10:42:49	BST	7000	214.60	LSE	1,887,893
23 September 2021	10:42:49	BST	838	214.60	LSE	1,887,891
23 September 2021	10:52:27	BST	8861	214.70	LSE	1,907,321
23 September 2021	10:58:05	BST	7654	214.50	LSE	1,918,314
23 September 2021	10:58:05	BST	1558	214.50	LSE	1,918,312
23 September 2021	11:04:54	BST	5878	214.70	LSE	1,925,712
23 September 2021	11:04:54	BST	2464	214.70	LSE	1,925,710
23 September 2021	11:09:25	BST	271	214.90	LSE	1,929,671
23 September 2021	11:09:25	BST	736	214.90	LSE	1,929,675
23 September 2021	11:09:25	BST	7000	214.90	LSE	1,929,673
23 September 2021	11:10:43	BST	8557	214.80	LSE	1,930,880
23 September 2021	11:10:56	BST	8323	214.70	LSE	1,931,232
23 September 2021	11:11:50	BST	6400	214.30	LSE	1,933,628
23 September 2021	11:11:50	BST	1603	214.30	LSE	1,933,626
23 September 2021	11:17:01	BST	1167	213.90	LSE	1,941,025
23 September 2021	11:17:01	BST	6465	213.90	LSE	1,941,023
23 September 2021	11:20:05	BST	8241	214.20	LSE	1,943,878
23 September 2021	11:28:03	BST	8483	214.50	LSE	1,949,778
23 September 2021	11:32:57	BST	750	214.40	LSE	1,953,344
23 September 2021	11:32:57	BST	959	214.40	LSE	1,953,342
23 September 2021	11:32:57	BST	1500	214.40	LSE	1,953,346
23 September 2021	11:32:57	BST	4902	214.40	LSE	1,953,348
23 September 2021	11:39:35	BST	391	214.20	LSE	1,958,344
23 September 2021	11:41:25	BST	8089	214.30	LSE	1,959,668
23 September 2021	11:45:07	BST	6772	214.30	LSE	1,962,686
23 September 2021	11:45:07	BST	1492	214.30	LSE	1,962,683
23 September 2021	11:48:07	BST	8399	214.10	LSE	1,966,951
23 September 2021	11:58:34	BST	7966	213.90	LSE	1,975,590
23 September 2021	12:04:02	BST	8750	213.90	LSE	1,980,319
23 September 2021	12:10:40	BST	7491	213.90	LSE	1,985,036
23 September 2021	12:22:38	BST	8980	215.00	LSE	1,994,531
23 September 2021	12:22:38	BST	7856	215.00	LSE	1,994,529
23 September 2021	12:22:54	BST	136	214.90	LSE	1,994,681
23 September 2021	12:22:54	BST	8223	214.90	LSE	1,994,679
23 September 2021	12:29:11	BST	1768	214.70	LSE	2,000,090
23 September 2021	12:29:11	BST	5752	214.70	LSE	2,000,094
23 September 2021	12:29:11	BST	874	214.70	LSE	2,000,092
23 September 2021	12:36:28	BST	8189	214.70	LSE	2,006,093
23 September 2021	12:41:03	BST	8689	214.70	LSE	2,009,521
23 September 2021	12:48:41	BST	9017	214.50	LSE	2,015,663
23 September 2021	12:56:27	BST	9013	214.60	LSE	2,021,561
23 September 2021	12:57:33	BST	487	214.40	LSE	2,022,628
23 September 2021	12:57:33	BST	829	214.40	LSE	2,022,626
23 September 2021	12:57:33	BST	2994	214.40	LSE	2,022,624
23 September 2021	12:57:33	BST	1500	214.40	LSE	2,022,622
23 September 2021	12:57:33	BST	2300	214.40	LSE	2,022,620
23 September 2021	12:57:33	BST	750	214.40	LSE	2,022,618
23 September 2021	13:02:44	BST	1500	214.20	LSE	2,027,055
23 September 2021	13:02:44	BST	750	214.20	LSE	2,027,057
23 September 2021	13:02:44	BST	5198	214.20	LSE	2,027,059
23 September 2021	13:09:59	BST	7680	214.00	LSE	2,033,763
23 September 2021	13:19:44	BST	8756	214.30	LSE	2,041,876
23 September 2021	13:26:14	BST	8180	214.40	LSE	2,047,220
23 September 2021	13:27:03	BST	7500	214.20	LSE	2,047,738
23 September 2021	13:32:11	BST	8508	214.30	LSE	2,051,817
23 September 2021	13:36:07	BST	1376	214.30	LSE	2,055,835
23 September 2021	13:36:07	BST	2957	214.30	LSE	2,055,833
23 September 2021	13:36:07	BST	3200	214.30	LSE	2,055,831
23 September 2021	13:41:30	BST	7203	214.50	LSE	2,060,402
23 September 2021	13:41:30	BST	1411	214.50	LSE	2,060,404
23 September 2021	13:46:33	BST	8505	214.70	LSE	2,064,828
23 September 2021	13:51:07	BST	8104	214.70	LSE	2,069,083
23 September 2021	13:57:02	BST	4831	214.90	LSE	2,074,563
23 September 2021	13:57:02	BST	2548	214.90	LSE	2,074,561
23 September 2021	14:00:00	BST	1500	214.80	LSE	2,077,562
23 September 2021	14:00:00	BST	2300	214.80	LSE	2,077,560
23 September 2021	14:00:00	BST	188	214.90	LSE	2,077,569
23 September 2021	14:00:00	BST	1500	214.80	LSE	2,077,564
23 September 2021	14:00:00	BST	1900	214.90	LSE	2,077,566
23 September 2021	14:09:54	BST	7717	215.10	LSE	2,089,673
23 September 2021	14:11:51	BST	3707	215.10	LSE	2,091,605
23 September 2021	14:11:51	BST	1341	215.10	LSE	2,091,603
23 September 2021	14:11:51	BST	1500	215.10	LSE	2,091,601
23 September 2021	14:11:51	BST	1700	215.10	LSE	2,091,599
23 September 2021	14:11:51	BST	8233	215.10	LSE	2,091,597
23 September 2021	14:16:13	BST	7429	215.10	LSE	2,096,220
23 September 2021	14:21:01	BST	8391	215.10	LSE	2,100,952
23 September 2021	14:21:01	BST	751	215.10	LSE	2,100,950
23 September 2021	14:26:39	BST	9002	215.30	LSE	2,107,389
23 September 2021	14:29:34	BST	8438	215.50	LSE	2,110,813
23 September 2021	14:30:03	BST	4080	215.60	LSE	2,116,750
23 September 2021	14:30:03	BST	3281	215.60	LSE	2,116,748
23 September 2021	14:30:03	BST	1222	215.60	LSE	2,116,746
23 September 2021	14:30:51	BST	5173	215.70	LSE	2,119,919
23 September 2021	14:30:51	BST	3735	215.70	LSE	2,119,917
23 September 2021	14:32:58	BST	9015	215.60	LSE	2,125,035
23 September 2021	14:37:50	BST	8226	216.10	LSE	2,135,616
23 September 2021	14:37:50	BST	395	216.10	LSE	2,135,614
23 September 2021	14:38:47	BST	1334	216.30	LSE	2137549
23 September 2021	14:38:47	BST	1500	216.30	LSE	2137551
23 September 2021	14:39:16	BST	535	216.20	LSE	2138643
23 September 2021	14:39:43	BST	215	216.20	LSE	2139634
23 September 2021	14:39:43	BST	7541	216.20	LSE	2139632
23 September 2021	14:40:50	BST	7482	216.10	LSE	2141672
23 September 2021	14:45:03	BST	7944	216.40	LSE	2150115
23 September 2021	14:46:35	BST	3254	216.40	LSE	2153453
23 September 2021	14:46:35	BST	5709	216.40	LSE	2153451
23 September 2021	14:47:46	BST	9021	216.60	LSE	2155817
23 September 2021	14:50:27	BST	8158	216.50	LSE	2161971
23 September 2021	14:52:55	BST	8184	216.40	LSE	2167050
23 September 2021	14:56:49	BST	3639	216.40	LSE	2174719
23 September 2021	14:56:49	BST	5500	216.40	LSE	2174717
23 September 2021	15:00:35	BST	9068	215.90	LSE	2182494
23 September 2021	15:04:09	BST	5207	216.40	LSE	2190010
23 September 2021	15:04:09	BST	3311	216.40	LSE	2190008
23 September 2021	15:07:48	BST	8170	216.50	LSE	2197360
23 September 2021	15:08:43	BST	1607	216.40	LSE	2199226
23 September 2021	15:08:43	BST	4716	216.40	LSE	2199230
23 September 2021	15:08:43	BST	1931	216.40	LSE	2199228
23 September 2021	15:11:51	BST	5749	216.50	LSE	2205453
23 September 2021	15:11:51	BST	3161	216.50	LSE	2205451
23 September 2021	15:17:38	BST	234	216.30	LSE	2216931
23 September 2021	15:17:38	BST	7757	216.40	LSE	2216882
23 September 2021	15:17:38	BST	1248	216.40	LSE	2216880
23 September 2021	15:18:29	BST	6454	216.30	LSE	2218542
23 September 2021	15:18:29	BST	867	216.30	LSE	2218540
23 September 2021	15:20:50	BST	8549	216.30	LSE	2223088
23 September 2021	15:23:34	BST	7406	216.40	LSE	2228367

Signatures

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: 23 September 2021

NATWEST MARKETS Plc (Registrant)

By: /s/ Jan Cargill

Name: Jan Cargill

Title: Deputy Secretary