Half-Year Liquidity Contract Statement On December 31St, 2025

(MENAFN- GlobeNewsWire - Nasdaq) HALF-YEAR LIQUIDITY CONTRACT STATEMENT

Paris, January 9^th, 2026

Under the liquidity contract entered between ASSYSTEM S.A. (ISIN: FR0000074148 - ASY) and Kepler Cheuvreux, the following resources appeared on the liquidity account on December 31^st, 2025:

- 10,903 shares
- € 842,698.88

- Number of executions on buy side on semester: 1,520
- Number of executions on sell side on semester: 1,528
- Traded volume on buy side on semester: 43,079 shares for € Traded volume on sell side on semester: 43,617 shares for €

As a reminder:
. the following resources appeared on the last half year statement on June 30^th, 2025, on the liquidity account:

- 11,441 shares
- € Number of executions on buy side on semester: 2,444
- Number of executions on sell side on semester: 2,323
- Traded volume on buy side on semester: 80,317 shares for € Traded volume on sell side on semester: 76,852 shares for €

. the following resources appeared on the liquidity account when the activity started:

- 22,970 shares
- €

The liquidity agreement complies with AMF Decision n° 2021-01 dated on June 22^nd, 2021, introducing liquidity agreements on equity securities as permitted market practice.

ABOUT ASSYSTEM

Assystem, one of the world's leading independent nuclear engineering companies, is committed to accelerating the energy transition. With 60 years of experience in highly regulated sectors with stringent safety and security constraints, the Group provides engineering and project management services as well as digital solutions and services to optimise the performance of complex infrastructure assets throughout their life cycle.

In its 13 countries of operation, Assystem's 8,000 experts are supporting energy transition. To achieve an affordable low carbon energy supply, Assystem is committed to the development of low carbon electricity (nuclear, renewables and electricity grids) and clean hydrogen. The Group is also helping drive the use of low carbon electricity in industrial sectors such as transportation.

Assystem is currently ranked among the top three nuclear engineering groups worldwide.

Assystem forms part of the Euronext Tech Leaders, CAC Small, CAC Mid & Small, CAC Industrials, CAC All-Tradable and CAC All-Share indices.

To find out more visit

CONTACT
Malène Korvin
CFO
Tél: +33 (0)1 41 25 29 00

	Buy Side		Sell Side
	Number of executions	Number of shares	Traded volume in EUR		Number of executions	Number of shares	Traded volume in EUR
Total	1,520	43,079	1,872,571.29		1,528	43,617	1,908,637.73
07/01/2025	13	477	19,871.82		4	114	4,774.32
07/02/2025	22	567	23,405.76		37	907	37,658.64
07/03/2025	2	100	4,225.00		15	329	13,956.18
07/04/2025	6	245	10,319.40		5	150	6,349.50
07/07/2025	29	634	26,621.66		13	356	15,037.44
07/08/2025	11	500	20,585.00		8	803	33,099.66
07/09/2025	3	100	4,235.00		17	597	25,426.23
07/10/2025	5	200	8,490.00		-	-	-
07/11/2025	19	550	23,463.00		24	750	32,047.50
07/14/2025	37	1,255	53,776.75		22	1,305	55,997.55
07/15/2025	20	450	19,345.50		26	1,001	43,273.23
07/16/2025	20	500	21,805.00		3	150	6,640.50
07/17/2025	8	250	10,880.00		17	600	26,268.00
07/18/2025	18	567	24,840.27		12	450	19,795.50
07/21/2025	20	633	27,763.38		14	570	25,051.50
07/22/2025	10	251	10,953.64		8	221	9,699.69
07/23/2025	8	334	14,645.90		29	709	31,224.36
07/24/2025	4	200	8,916.00		16	600	27,018.00
07/25/2025	8	300	14,364.00		35	1,150	55,395.50
07/28/2025	17	650	31,135.00		12	450	21,694.50
07/29/2025	10	400	19,272.00		19	450	21,789.00
07/30/2025	3	150	7,260.00		11	300	14,550.00
07/31/2025	12	250	12,105.00		11	270	13,130.10
08/01/2025	18	450	21,465.00		2	71	3,412.26
08/04/2025	16	500	23,225.00		12	250	11,655.00
08/05/2025	2	100	4,640.00		14	351	16,507.53
08/06/2025	10	202	9,534.40		14	399	18,932.55
08/07/2025	2	9	432.27		5	229	11,017.19
08/08/2025	15	390	18,614.70		8	150	7,185.00
08/11/2025	12	502	23,970.50		15	281	13,558.25
08/12/2025	8	200	9,470.00		9	250	11,925.00
08/13/2025	21	650	31,453.50		18	580	28,251.80
08/14/2025	10	300	14,454.00		21	650	31,408.00
08/15/2025	19	450	21,712.50		13	402	19,472.88
08/18/2025	4	100	4,810.00		2	100	4,845.00
08/19/2025	1	1	48.40		13	398	19,513.94
08/20/2025	15	500	23,880.00		-	-	-
08/21/2025	7	200	9,620.00		2	150	7,270.50
08/22/2025	2	50	2,400.00		10	350	16,954.00
08/25/2025	21	600	28,902.00		20	500	24,170.00
08/26/2025	37	1,099	50,861.72		15	350	16,324.00
08/27/2025	7	300	13,854.00		5	200	9,268.00
08/28/2025	11	300	13,776.00		5	250	11,545.00
08/29/2025	12	450	20,371.50		3	150	6,900.00
09/01/2025	3	50	2,280.00		8	400	18,264.00
09/02/2025	15	450	20,241.00		-	-	-
09/03/2025	16	330	14,543.10		1	5	220.75
09/04/2025	-	-	-		6	295	13,047.85
09/05/2025	9	350	15,596.00		11	231	10,316.46
09/08/2025	9	350	15,550.50		14	469	20,936.16
09/09/2025	9	335	15,081.70		11	350	15,767.50
09/10/2025	3	115	5,175.00		5	100	4,525.00
09/11/2025	1	1	44.60		9	300	13,635.00
09/12/2025	1	50	2,310.00		10	327	15,189.15
09/15/2025	8	250	11,700.00		13	373	17,527.27
09/16/2025	15	351	16,212.69		-	-	-
09/17/2025	63	1,880	80,633.20		32	1,153	50,028.67
09/18/2025	22	381	16,863.06		16	515	22,829.95
09/19/2025	11	250	11,095.00		10	282	12,619.50
09/22/2025	17	650	28,327.00		9	351	15,352.74
09/23/2025	20	400	17,004.00		4	150	6,469.50
09/24/2025	6	150	6,385.50		9	350	14,948.50
09/25/2025	4	200	8,560.00		7	251	10,782.96
09/26/2025	5	200	8,660.00		7	249	10,826.52
09/29/2025	11	300	12,807.00		-	-	-
09/30/2025	5	200	8,470.00		12	300	12,780.00
10/01/2025	16	501	21,422.76		12	351	15,089.49
10/02/2025	17	500	21,160.00		27	750	31,972.50
10/03/2025	15	470	19,913.90		6	150	6,480.00
10/06/2025	12	650	26,851.50		21	401	16,681.60
10/07/2025	4	150	6,240.00		6	98	4,113.06
10/08/2025	22	500	20,745.00		14	521	21,663.18
10/09/2025	19	505	20,932.25		18	393	16,348.80
10/10/2025	24	650	26,624.00		13	274	11,318.94
10/13/2025	8	364	14,843.92		29	666	27,292.68
10/14/2025	16	481	19,538.22		4	100	4,073.00
10/15/2025	3	100	4,070.00		12	252	10,314.36
10/16/2025	8	351	14,320.80		12	348	14,264.52
10/17/2025	15	499	19,940.04		6	100	4,010.00
10/20/2025	7	213	8,558.34		19	350	14,108.50
10/21/2025	10	156	6,274.32		17	250	10,140.00
10/22/2025	11	550	22,495.00		25	573	23,493.00
10/23/2025	-	-	-		16	823	33,956.98
10/24/2025	9	600	24,774.00		10	300	12,519.00
10/27/2025	6	250	10,490.00		20	311	13,077.55
10/28/2025	8	246	10,302.48		5	56	2,353.68
10/29/2025	-	-	-		30	582	25,095.84
10/30/2025	11	450	19,467.00		16	356	15,407.68
10/31/2025	-	-	-		24	335	14,592.60
11/03/2025	19	700	30,380.00		18	550	23,925.00
11/04/2025	18	504	21,304.08		-	-	-
11/05/2025	6	201	8,251.05		2	2	83.20
11/06/2025	14	208	8,490.56		4	153	6,256.17
11/07/2025	15	472	19,045.20		12	352	14,287.68
11/10/2025	7	200	8,096.00		12	196	7,987.00
11/11/2025	8	150	6,139.50		18	449	18,480.84
11/12/2025	4	150	6,270.00		8	200	8,380.00
11/13/2025	21	302	12,635.68		5	205	8,601.80
11/14/2025	14	248	10,207.68		7	159	6,584.19
11/17/2025	3	7	294.00		9	286	12,014.86
11/18/2025	15	443	18,477.53		10	359	15,124.67
11/19/2025	16	454	18,927.26		7	349	14,612.63
11/20/2025	29	567	23,796.99		15	504	21,218.40
11/21/2025	30	442	18,219.24		10	277	11,489.96
11/24/2025	15	387	15,607.71		16	490	20,090.00
11/25/2025	13	296	12,159.68		22	395	16,333.25
11/26/2025	3	50	2,080.00		1	34	1,428.00
11/27/2025	8	343	14,399.14		29	992	41,921.92
11/28/2025	8	202	8,623.38		11	270	11,553.30
12/01/2025	29	312	13,303.68		13	350	15,004.50
12/02/2025	8	198	8,508.06		7	200	8,626.00
12/03/2025	8	250	10,765.00		2	100	4,323.00
12/04/2025	7	147	6,345.99		17	258	11,153.34
12/05/2025	7	110	4,787.20		11	143	6,236.23
12/08/2025	6	143	6,176.17		16	328	14,372.96
12/09/2025	20	402	17,728.20		9	207	9,234.27
12/10/2025	11	299	12,824.11		-	-	-
12/11/2025	5	137	5,829.35		2	100	4,295.00
12/12/2025	15	600	25,548.00		13	359	15,458.54
12/15/2025	14	300	12,408.00		30	550	23,226.50
12/16/2025	1	1	43.00		5	200	8,610.00
12/17/2025	17	299	12,677.60		4	65	2,795.00
12/18/2025	9	108	4,502.52		8	151	6,311.80
12/19/2025	10	201	8,349.54		9	200	8,340.00
12/22/2025	10	255	10,485.60		11	300	12,444.00
12/23/2025	6	150	6,229.50		12	200	8,356.00
12/24/2025	4	71	2,939.40		4	59	2,454.40
12/29/2025	4	124	5,087.72		-	-	-
12/30/2025	13	252	10,321.92		11	292	12,068.36
12/31/2025	1	49	2,028.60		8	249	10,527.72

Attachment

• PR Half-year liquidity contract statement 09.01.2026

MENAFN09012026004107003653ID1110578342