Wavestone

Transaction in Own Shares • Jan 9, 2023

Press release Paris, January 9, 2023, 6 pm

Liquidity contract yearly report

On 31 December 2022 and according to Wavestone's agreement with Portzamparc, the following means were dedicated to implement the liquidity contract:

• 18,199 Wavestone shares
• € 658,951.49 in cash

Note that at the launch of the contract (on the launch date of the contract, in accordance with AMF decision n°2018-01 of July 2, 2018 – position on December 31, 2018) the means were the following:

• 36,611 Wavestone shares
• € 88,633.74 in cash

During the second half of 2022, it has been negotiated a total of:

PURCHASES	60,513 shares	€ 2,764,601.27	698 transactions
SALES	61,342 shares	€ 2,816,849.45	680 transactions

About Wavestone

In a world where knowing how to drive transformation is the key to success, Wavestone's mission is to inform and guide large companies and organizations in their most critical transformations, with the ambition of a positive outcome for all stakeholders. It's an ambition anchored in the firm's DNA and embodied in the signature "The Positive Way."

Wavestone draws on about 4,000 employees across Europe – where it is a leading independent player in consulting, the United States and Asia.

Wavestone is listed on Euronext Paris and recognized as a Great Place to Work ®

Wavestone Pascal Imbert CEO Tel.: +33 (0)1 49 03 20 00 Justine Brosset Financial Communication Tel.: +33 (0)1 49 03 20 00

Actus Mathieu Omnes Investor and Analyst Relations Tel.: +33 (0)1 53 67 36 92 Deborah Schwartz Press relations Tel.: +33 (0)1 53 67 36 35

Details¹ of the transactions executed: purchases on the one hand and sales on the other hand; in an aggregated table for each trading day of the 2nd half of 2022

PURCHASES				SALES
Date	Number of transactions	Number of shares	Traded capital (in euros)	Date	Number of transactions	Number of shares	Traded capital (in euros)
TOTAL	698	60,513	2,764,601.27	TOTAL	680	61,342	2,816,849.45
07/01/2022	5	408	17,780.4	07/01/2022	3	300	13,125
07/05/2022	10	901	41,666.84	07/04/2022	12	950	42,455.03
07/07/2022	1	1	47.4	07/05/2022	6	501	23,596.8
07/08/2022	5	500	24,300	07/06/2022	8	1,400	65,420.04
07/11/2022	12	1,101	53,788.25	07/07/2022	14	1,301	62,757.38
07/12/2022	32	3,529	163,873.35	07/08/2022	4	400	19,660
07/13/2022	10	1,000	45,500	07/11/2022	3	300	14,880
07/14/2022	6	501	22,675.51	07/13/2022	3	300	13,800
07/15/2022	4	400	18,060	07/14/2022	4	301	13,755.49
07/19/2022	5	451	20,755.79	07/15/2022	7	620	28,305.98
07/20/2022	1	1	46.1	07/18/2022	10	910	41,949
07/22/2022	8	765	37,166	07/19/2022	4	400	18,600
07/25/2022	4	400	19,250	07/20/2022	13	1,300	61,189.96
07/26/2022	7	700	33,960.01	07/21/2022	8	800	38,815.04
07/27/2022	7	601	29,178.79	07/22/2022	3	300	14,730
07/28/2022	6	600	29,590.02	07/25/2022	6	600	29,250
07/29/2022	4	301	14,749	07/26/2022	4	393	19,314.89
08/01/2022	6	500	25,190	07/27/2022	10	851	41,803.76
08/02/2022	5	401	19,919.72	07/28/2022	4	400	19,940
08/03/2022	4	400	19,620	07/29/2022	6	600	29,850
08/04/2022	1	1	49.7	08/01/2022	1	100	5,120
08/05/2022	4	301	15,471.61	08/02/2022	6	496	24,837.7
08/08/2022	1	100	5,140	08/03/2022	5	500	24,795
08/09/2022	8	800	41,250	08/04/2022	16	951	48,154.74
08/10/2022	2	200	10,070	08/05/2022	6	451	23,371.59
08/11/2022	10	851	43,586.43	08/08/2022	5	500	25,910

¹ Number of transactions and volume (number of shares and traded capital)

08/12/2022	6	600	30,510	08/09/2022	6	600	31,450.02
08/15/2022	9	820	41,671.99	08/10/2022	8	800	40,860
08/16/2022	4	338	17,005.19	08/11/2022	9	601	31,091.41
08/17/2022	9	900	45,630	08/12/2022	8	800	40,950
08/18/2022	9	815	40,777.47	08/15/2022	4	400	20,540
08/19/2022	8	625	30,924.63	08/16/2022	7	602	30,492.2
08/22/2022	9	608	29,552.39	08/17/2022	7	700	35,840
08/23/2022	7	700	33,400.01	08/19/2022	2	2	102
08/24/2022	6	600	28,140	08/22/2022	2	200	9,750
08/26/2022	9	651	31,393.56	08/23/2022	3	218	10,513.01
08/29/2022	9	650	30,594.98	08/24/2022	6	600	28,590
08/30/2022	5	500	23,325	08/25/2022	7	640	31,016
08/31/2022	7	551	25,601.77	08/26/2022	5	401	19,533.55
09/01/2022	7	505	23,236.77	08/30/2022	5	500	23,595
09/05/2022	2	200	9,270	08/31/2022	4	301	14,096.79
09/07/2022	6	550	26,222.52	09/01/2022	2	200	9,260
09/08/2022	3	201	9,436.99	09/02/2022	6	600	28,410
09/09/2022	3	227	10,903.31	09/06/2022	15	1,300	61,589.97
09/12/2022	4	400	19,560	09/07/2022	1	100	4,815
09/13/2022	7	700	34,275.01	09/08/2022	10	801	37,969.96
09/14/2022	6	501	24,002.61	09/09/2022	6	550	26,649.98
09/15/2022	6	501	24,073.25	09/12/2022	4	344	16,935.19
09/16/2022	7	700	33,180	09/13/2022	4	400	19,880
09/19/2022	7	500	23,305	09/14/2022	7	601	28,877.63
09/20/2022	6	600	27,660	09/15/2022	5	401	19,408.24
09/22/2022	16	1,501	68,826.4	09/20/2022	6	600	27,970.02
09/23/2022	8	800	35,650	09/21/2022	6	600	27,820.02
09/26/2022	2	200	8,570	09/22/2022	8	701	32,491.35
09/27/2022	9	801	34,063.17	09/26/2022	9	900	38,915.01
09/28/2022	6	410	17,133	09/27/2022	3	201	8,703.2
09/29/2022	8	501	21,147.76	09/28/2022	7	630	26,726.99
09/30/2022	1	2	84.1	09/29/2022	3	30	1,279.5
10/03/2022	10	700	30,550.03	09/30/2022	15	1,500	64,735.05
10/05/2022	7	515	23,165.99	10/03/2022	2	190	8,321.51
10/06/2022	5	344	15,279.21	10/04/2022	11	1,100	48,819.98

10/07/2022	9	600	26,520	10/06/2022	12	1,101	49,264.25
10/10/2022	4	400	17,180	10/07/2022	2	105	4,715
10/11/2022	6	600	25,530	10/10/2022	5	431	18,673.16
10/12/2022	4	400	17,050	10/11/2022	9	900	38,715.03
10/13/2022	6	501	21,262.69	10/12/2022	3	300	12,870
10/14/2022	3	201	8,834.09	10/13/2022	10	901	38,762.73
10/18/2022	3	300	13,449.99	10/14/2022	7	551	24,434.1
10/19/2022	7	650	28,757.5	10/17/2022	6	600	26,755.02
10/20/2022	5	401	17,504.01	10/18/2022	5	500	22,530
10/21/2022	3	201	8,773.79	10/19/2022	2	200	8,940
10/25/2022	4	232	10,329.01	10/20/2022	6	501	21,994
10/26/2022	1	1	45.65	10/21/2022	4	301	13,243.79
10/27/2022	9	801	37,056.98	10/24/2022	6	600	26,860.02
10/28/2022	9	651	29,405.67	10/25/2022	8	551	24,914.84
10/31/2022	8	601	26,523.27	10/26/2022	5	450	20,820.02
11/01/2022	7	658	28,338.81	10/27/2022	1	1	47
11/02/2022	5	412	17,778.42	10/28/2022	1	1	45.7
11/03/2022	10	1,000	42,430	10/31/2022	2	200	8,870
11/04/2022	6	510	21,406.49	11/01/2022	3	300	13,149.99
11/07/2022	1	100	4,175	11/02/2022	8	701	30,352.18
11/08/2022	4	301	12,807.94	11/03/2022	2	101	4,363.3
11/09/2022	8	651	27,592.9	11/04/2022	3	300	12,765
11/10/2022	3	300	12,635.01	11/07/2022	5	500	21,150
11/11/2022	5	424	18,499.2	11/08/2022	5	401	17,212.97
11/14/2022	6	600	26,299.98	11/09/2022	2	15	643.5
11/15/2022	2	200	8,630	11/10/2022	8	800	34,220
11/16/2022	10	710	30,652.48	11/11/2022	4	400	17,650
11/17/2022	5	500	21,195	11/14/2022	3	300	13,320
11/18/2022	4	301	12,667.04	11/15/2022	5	500	21,830
11/21/2022	6	550	23,122.5	11/16/2022	3	300	13,155
11/22/2022	1	61	2,537.6	11/17/2022	1	100	4,295
11/23/2022	1	100	4,285	11/18/2022	8	617	26,156.05
11/24/2022	4	400	17,390	11/21/2022	4	395	16,668.25
11/25/2022	6	600	26,509.98	11/22/2022	8	800	33,680
11/28/2022	6	550	24,195	11/23/2022	6	550	23,689.99

11/29/2022	4	400	17,550	11/24/2022	5	469	20,677.04
11/30/2022	9	801	35,324.02	11/25/2022	5	500	22,205
12/01/2022	7	601	26,594.49	11/28/2022	4	400	17,690
12/02/2022	6	550	24,179.98	11/29/2022	1	100	4,405
12/05/2022	5	500	22,030	11/30/2022	10	926	41,305.34
12/06/2022	14	1,001	43,954.21	12/01/2022	7	551	24,609.48
12/07/2022	7	600	25,369.98	12/02/2022	8	800	35,510
12/08/2022	5	446	18,564.39	12/05/2022	6	600	26,651.28
12/09/2022	4	400	16,890	12/06/2022	1	1	44.25
12/12/2022	5	500	21,100	12/07/2022	1	1	42.95
12/13/2022	1	1	42.5	12/08/2022	7	700	29,525.02
12/14/2022	6	550	23,612.49	12/09/2022	4	400	17,070
12/15/2022	4	317	13,444.19	12/12/2022	8	717	30,540.97
12/16/2022	3	300	12,630	12/13/2022	10	751	32,212.49
12/19/2022	3	300	12,600	12/16/2022	6	600	25,440
12/20/2022	2	200	8,350	12/20/2022	2	200	8,380
12/21/2022	2	103	4,305.1	12/21/2022	8	800	33,840
12/22/2022	5	400	16,980	12/23/2022	2	101	4,241.85
12/23/2022	4	301	12,521.84	12/27/2022	10	809	33,939.82
12/27/2022	8	637	26,600.61	12/28/2022	6	501	21,192
12/28/2022	6	403	16,946.19	12/29/2022	9	801	34,167.14
12/29/2022	3	201	8,452.15	12/30/2022	4	301	13,017.95
12/30/2022	3	102	4,381.1

5