Alten

Capital/Financing Update • Jan 15, 2024

Half-year liquidity contract statement for ALTEN

Under the liquidity contract entered into between ALTEN and Kepler Cheuvreux, the following resources appeared on the liquidity account on December 31st 2023:

• 1,971 shares
• € 1,511,911.80
• Number of executions on buy side on semester: 3,379
• Number of executions on sell side on semester: 3,200
• Traded volume on buy side on semester: 101,212 shares for € 12,836,303.12
• Traded volume on sell side on semester: 102,732 shares for € 13,057,782.56

As a reminder :

• the following resources appeared on the last half year statement on 30 June 2023 on the liquidity account:

• 3,491 shares
• € 1,275,405.56
• Number of executions on buy side on semester: 3,470
• Number of executions on sell side on semester: 3,564
• Traded volume on buy side on semester: 105,691 shares for € 15,317,601.94
• Traded volume on sell side on semester: 110,230 shares for € 15,882,454.33
• the following resources appeared on the liquidity account when the activity started:
• 9,848 shares
• € 40,881.00

The implementation of this report is carried out in accordance with AMF Decision N°2021-01 of June 22nd 2021 renewing the implementation of liquidity contracts for shares as an accepted market practice.

About ALTEN SA

For all information: www.alten.com/investors Contact for journalists: alten@hopcotch.fr

As the European leader in Engineering and Technology Consulting (ETC), ALTEN carries out design and research projects for the Technical and IT/IS Departments of major industrial, telecom and tertiary clients. The ALTEN share is listed on compartment A of the Euronext Paris market (ISIN FR0000071946) and is part of SBF 120, the IT CAC 50 index, and MIDCAP 100, and is eligible for the Deferred Settlement Service (DSS).

	Buy 31de			Sell Side
	Number of executions	Number of charec	Traded volume In EUR	Number of executions	Number of charec	Traded volume In EUR
Total	3,379	101,212	12,838,303.12	3,200	102,732	13,057,782.58
03/07/2023	25	548	77,394.04	я	250	35,930.00
04/07/2023	25	600	84,234.00	В	354	49,885.68
05/07/2023	54	1,300	180,219.00	10	300	41,691.00
05/07/2023	35	1,000	136,000.00	$\boldsymbol{\alpha}$	$\mathbf{u}$
07/07/2023	$\rm _{H}$	$\rm _{H}$		5	300	40,620.00
10/07/2023	з	100	13,390.00	$\sim$	$\bar{a}$
11/07/2023	10	400	54,224.00	22	750	102,105.00
12/07/2023	$\bar{a}$	$\equiv$		51	1,650	227.287.50
13/07/2023	$\bar{a}$	$\overline{a}$		20	546	76,538.28
14/07/2023	33	454	63,155.94	4	105	14,670.60
17/07/2023	35	1,046	143,542.58	$\bar{a}$
18/07/2023	13	200	27,380.00	38	1.400	193,032.00
19/07/2023	$\scriptstyle\rm II$	$\scriptstyle\rm II$		44	1,409	198,204.03
20/07/2023	104	1,961	275,147.91	я	350	49,423.50
21/07/2023	10	349	48,479.59	15	555	77.594.55
24/07/2023	40	1,300	181,415.00	23	845	118,570.40
25/07/2023	23	768	106.529.28	36	1,132	157.597.04
26/07/2023	42	983	136,784.45	15	627	87,497.85
27/07/2023	$\rm _{H}$	$\rm _{H}$		82	2.177	309,025.15
28/07/2023	120	3,669	500,598.36	$\sim$	$\mu$
31/07/2023	52	1,450	190,878.00	з	120	15,848.40
01/08/2023	5	100	13,060.00	44	1,030	136,845.80
02/08/2023	34	770	102,279.10	20	800	107,032.00
03/08/2023	49	1,350	179,685.00	38	1.210	161,619.70
04/08/2023	30	980	129.722.60	32	900	119,313.00
07/08/2023	22	650	85,683.00	16	700	92,799.00
08/08/2023	56	1,550	202,383.50	4	150	19,830.00
09/08/2023	38	865	112,458.65	30	940	123,149.40
10/08/2023	$\blacksquare$	$\scriptstyle\rm II$		36	1,152	151,084.80
11/08/2023	33	1,150	150,247.50	B	300	39,429.00
14/08/2023	22	650	84,220.50	24	750	97,417.50
15/08/2023	28	1,085	139,628.65	17	405	52,293.60
16/08/2023	35	752	96,075.52	15	296	37,956.08
17/08/2023	42	1,149	145,176.15	32	1,270	161,226.50
18/08/2023	34	1,050	132,237.00	24	806	101,701.08
21/08/2023	17	650	81,965.00	19	673	85,094.12
22/08/2023	13	400	50,676.00	27	856	109,020.16
23/08/2023	40	1,301	164,134.16	27	757	95,927.04
24/08/2023	26	1,051	132,919.97	31	727	92,925.14
25/08/2023	30	923	116,344.15	31	1,465	184,868.35
28/08/2023	8	259	32,786.81	36	1,009	128,274.17
29/08/2023	22	641	81,708.27	57	1,439	184,537.36
30/08/2023	29	1,000	129,690.00	46	1,300	169,104.00
31/08/2023	10	310	40,637.90	37	1,100	144,342.00
01/09/2023	23	741	97,071.00	а	400	52,560.00
04/09/2023	33	868	113,734.04	25	850	111,826.00
05/09/2023	20	495	66,072.60	98	2,078	278,368.88
05/09/2023	38	890	119,535.90	41	1,158	156,550.02
07/09/2023	28	850	114,376.00	18	669	90,288.24
08/09/2023	22	700	94,171.00	33	909	122,924.07
11/09/2023	22	1,635	221,133.75	39	1,522	206,778.92

	Number of executions	Number of Traded volume charec In EUR		Number of executions
Total	3,379	101,212	12,338,303.12	3,200
12/09/2023	56	1,470	198,258.90	19
13/09/2023	45	1,202	160,130.44	23
14/09/2023	23	759	100,575.09	34
15/09/2023	21	700	94,514.00	45
18/09/2023	80	2,602	340,393.64	$\sim$
19/09/2023	19	594	76,198.32	25
20/09/2023	15	401	52,250.30	37
21/09/2023	52	1,273	164,140.62	38
22/09/2023	93	3,200	398,304.00	79
25/09/2023	33	1,150	144,532.00	29
26/09/2023	69	1,950	241,117.50	15
27/09/2023	47	1,650	199,683.00	1
28/09/2023	10	350	42,535.50	66
29/09/2023	15	500	62,310.00	48
02/10/2023	42	1,380	168,870.60	15
03/10/2023	17	600	71,820.00	2
04/10/2023	28	500	59,300.00	22
05/10/2023	6	150	18,060.00	11
05/10/2023	17	600	71,982.00	28
09/10/2023	24	850	102,008.50	20
10/10/2023	$\scriptstyle\rm II$	$\rm _{H}$		73
11/10/2023	46	1,540	186,971.40
12/10/2023	14	550	66,313.50	25
13/10/2023	52	1,650	196,894.50	12
16/10/2023	42	950	111,055.00	19
17/10/2023	38	1,300	153,114.00	46
18/10/2023	58	1,450	168,925.00	15
19/10/2023	56	1,450	164,908.50	1
20/10/2023	37	1,100	122,309.00	31
23/10/2023	18	650	71,877.00	21
24/10/2023	23	800	89,016.00	26
25/10/2023	37	1,150	126,615.00	20
26/10/2023	35	1,260	139,671.00	27
27/10/2023	71	2,550	272,569.50	56
30/10/2023	25	613	66,792.48	44
31/10/2023	17	326	35,683.96	47
01/11/2023	16	357	39,605.58	22
02/11/2023	15	600	68,310.00	50
03/11/2023	8	251	28,468.42	48
05/11/2023	12	522	60,619.86	32
07/11/2023	26	898	103,835.74	28
08/11/2023	14	350	40,691.00	26
09/11/2023	4	150	17,775.00	32
10/11/2023	38	1,212	144,518.88	21
13/11/2023	7	300	35,910.00	31
14/11/2023	14	450	54,081.00	45
15/11/2023	24	770	96,350.10	41
16/11/2023	27	930	115,831.50	18
17/11/2023	8	350	43,736.00	40
20/11/2023	10	350	43,701.00	Ð
21/11/2023	11	450	55,930.50	B

	Sell Side
Number of executions	Number of chares	Traded volume In EUR
3,200	102,732	13,057,782.68
19	661	89,697.70
23	883	117,977.63
34	1,020	135,751.80
45	1,078	146,025.88
$\sim$	$\bar{a}$
25	660	85,034.40
37	1,050	137,235.00
38	1,479	191,042.43
79	2,700	340,200.00
29	950	119,918.50
15	602	74,894.82
1	50	6,130.00
66	2.188	267,132.92
48	1,500	187,590.00
15	400	49,952.00
2	60	7,201.80
22	890	107,067.00
11	250	30,350.00
28	700	84,700.00
20	750	90,375.00
73	2.450	301,962.50
$\sim$	$\bar{a}$
25	787	95,352.92
12	351	42,186.69
19	910	107,252.60
46	1,281	151,542.30
15	542	63,576.60
1	-50	5,745.00
31	890	99,582.10
21	750	83,257.50
26	756	84,346.92
20	700	77,427.00
27	944	105,076.64
56	2,000	215,200.00
44	1,250	136,975.00
47	1,700	187,697.00
22	651	72,710.19
50	1,549	176,678.94
48	1,550	178,250.00
32	800	93,440.00
28	1,350	157,099.50
26	808	95,093.52
32	1,299	155,996.91
21	701	83,776.51
31	799	96,183.62
45	1,650	201,349.50
41	1,450	182,018.50
18	700	87,913.00
40	1,345	168,340.20
B	255	31,987.20

350

44,019.50

	Buy Side			Sell Side
	Number of executions	Number of shares	Traded volume in EUR		Number of executions	Number of shares
Total	3,379	101,212	12,836,303.12		3,200	102,732
22/11/2023	5	111	13,749.57		13	550
23/11/2023	5	79	9,864.73		$\overline{a}$
24/11/2023	13	300	37,470.00		4	150
27/11/2023	26	767	95.890.34		15	300
28/11/2023	6	233	28,784.82		8	300
29/11/2023	6	101	12,684.59		19	600
30/11/2023	25	700	88,158.00		4	100
01/12/2023	10	301	37,814.63		15	551
04/12/2023	26	799	100,258.52		4	50
05/12/2023	20	550	68,799.50	37		1.000
06/12/2023	4	100	12,670.00	18		300
07/12/2023	28	650	82.160.00	5		140
08/12/2023	5	150	18,979.50	12		400
11/12/2023	31	954	121,644.54	30		909
12/12/2023	25	1.004	127,387.52	11		451
13/12/2023	16	550	70,130.50	33		940
14/12/2023	$\overline{a}$			25		1,300
15/12/2023	32	990	132,204.60	23		800
18/12/2023	38	1.280	169,395.20	13		500
19/12/2023	4	149	19,891.50	33		1.000
20/12/2023	23	593	79,604.32	21		700
21/12/2023	35	998	133,173.12	23		850
22/12/2023	$\overline{7}$	201	27,090.78	24		900
27/12/2023	15	499	68,293.14	17		550
28/12/2023	19	650	88,101.00	8		250
29/12/2023	17	400	53,852.00	7		161