REPORT ON THE TREASURY SHARES BUY-BACKPLAN OF DIASORIN S.P.A.

Saluggia, November 5, 2021 - With reference to treasury shares buy-back plan, DiaSorin S.p.A. hereby announces that, during the period from November 3rd, 2021 to November 4th, 2021, it purchased no. 15,000 treasury shares for a total consideration of 2,911,327.81 Euro, as authorized by the Shareholders' meeting on April 22nd, 2021, already disclosed pursuant to Art. 144-bis of Consob Regulation no. 11971/1999.

Details of the daily transactions on the Euronext Milan market are as follows:

Date

Number of ordinary

Average price (Euro)

Consideration (Euro)

shares purchased

November 3rd, 2021

8,000

195.975240

1,567,801.92

November 4th, 2021

7,000

191.932270

1,343,525.89

Total

15,000

194.088521

2,911,327.81

In accordance with the provisions of Article 2 paragraph 3 of the EU Regulation 1052, attached to this press release, information of the daily buying-in operations carried out in the above-mentioned period is indicated in detail.

Following the above purchases and considering the treasury shares already in portfolio, as of November 5th, 2021 DiaSorin S.p.A. holds no. 1,225,200 treasury shares, equal to 2.1899% of the share capital.

For additional information, please contact:

Riccardo Fava

Emanuela Salvini

Corporate Vice President Communication & Investor Relations

Investor Relator

Tel: +39.0161.487988

Tel: +39.0161.487567

riccardo.fava@diasorin.it

emanuela.salvini@diasorin.it

About DiaSorin

Headquartered in Italy and listed at the Italian Stock Exchange in the FTSE MIB Index, DiaSorin is a global leader in the In Vitro Diagnostic (IVD) field and is active since 2021 in the Life Science business. For over 50 years, the Company has been developing, producing and marketing reagent kits used by diagnostic laboratories worldwide.

The Group operates in 5 continents through 45 companies, 4 branches, 10 manufacturing facilities and 9 research and development centers. The extensive diagnostic testing and Life Science offer, made available through continuous investments in research, positions DiaSorin as the player with the broadest range of specialty tests available within the diagnostic market, and identifies the Group as the "Diagnostic Specialist".

More info at www.diasoringroup.com

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identificativo

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Prezzo per unità

identificativo

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dell'Emittente

dell'Intermediario

strumenti finanziari

operazione

(CET)

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operazione

dell'Intermediario

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Name of

Name of

Identity code

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Quantity

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the Issuer

the Broker

of the Broker

the financial instrument

the Transaction

the Market

the transaction

(CET)

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

09:02:20

B

77

198.00

MTA

EUR

134,494

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

09:02:20

B

50

198.00

MTA

EUR

134,493

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

09:02:20

B

50

198.00

MTA

EUR

134,492

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

09:02:20

B

15

198.00

MTA

EUR

134,491

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

09:12:47

B

43

198.35

MTA

EUR

134,647

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

09:12:47

B

46

198.35

MTA

EUR

134,646

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

09:12:47

B

45

198.35

MTA

EUR

134,645

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

09:12:47

B

5

198.35

MTA

EUR

134,644

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

09:25:32

B

111

200.00

MTA

EUR

134,806

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

09:25:32

B

12

200.00

MTA

EUR

134,805

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

09:38:51

B

127

200.00

MTA

EUR

135,021

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

09:45:54

B

143

200.00

MTA

EUR

135,158

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

09:56:41

B

5

199.20

MTA

EUR

135,355

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

09:56:41

B

25

199.20

MTA

EUR

135,354

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

09:56:41

B

40

199.20

MTA

EUR

135,353

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

09:56:41

B

51

199.20

MTA

EUR

135,352

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

10:07:54

B

8

199.65

MTA

EUR

135,549

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

10:07:54

B

7

199.65

MTA

EUR

135,548

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

10:07:54

B

7

199.65

MTA

EUR

135,547

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

10:07:54

B

8

199.65

MTA

EUR

135,546

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

10:07:54

B

46

199.65

MTA

EUR

135,545

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

10:07:54

B

40

199.65

MTA

EUR

135,544

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

10:25:04

B

106

200.00

MTA

EUR

135,779

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

10:29:43

B

30

199.45

MTA

EUR

135,839

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

10:29:43

B

80

199.45

MTA

EUR

135,838

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

10:40:07

B

14

197.70

MTA

EUR

135,992

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

10:40:07

B

100

197.70

MTA

EUR

135,991

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

10:52:13

B

146

199.25

MTA

EUR

136,281

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

11:02:21

B

108

199.35

MTA

EUR

136,426

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

11:14:06

B

108

197.35

MTA

EUR

136,947

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

11:24:19

B

145

196.25

MTA

EUR

137,101

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

11:36:03

B

95

196.30

MTA

EUR

137,304

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

11:46:58

B

1

195.75

MTA

EUR

137,441

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

11:47:04

B

16

195.75

MTA

EUR

137,448

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

11:47:04

B

78

195.75

MTA

EUR

137,447

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

11:57:24

B

15

196.25

MTA

EUR

137,710

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

11:57:32

B

23

196.25

MTA

EUR

137,714

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

11:57:32

B

50

196.25

MTA

EUR

137,713

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

12:09:36

B

14

196.20

MTA

EUR

138,079

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

12:09:36

B

19

196.20

MTA

EUR

138,078

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

12:09:45

B

6

196.20

MTA

EUR

138,083

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

12:09:45

B

49

196.20

MTA

EUR

138,082

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

12:19:51

B

67

196.75

MTA

EUR

138,280

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

12:31:11

B

69

196.35

MTA

EUR

138,580

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

12:31:11

B

10

196.35

MTA

EUR

138,579

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

12:41:48

B

65

196.55

MTA

EUR

138,911

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

12:53:28

B

15

196.55

MTA

EUR

139,072

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

12:53:28

B

7

196.55

MTA

EUR

139,071

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

12:53:50

B

28

196.60

MTA

EUR

139,084

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

12:53:50

B

11

196.60

MTA

EUR

139,083

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

13:03:16

B

59

196.70

MTA

EUR

139,322

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

13:15:27

B

2

196.40

MTA

EUR

140,089

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

13:15:27

B

16

196.40

MTA

EUR

140,088

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

13:15:27

B

15

196.35

MTA

EUR

140,086

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

13:15:27

B

33

196.35

MTA

EUR

140,084

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

13:15:27

B

15

196.35

MTA

EUR

140,083

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

13:26:12

B

57

196.55

MTA

EUR

140,291

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

13:26:12

B

19

196.55

MTA

EUR

140,290

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

13:35:28

B

12

196.45

MTA

EUR

140,414

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

13:35:29

B

44

196.50

MTA

EUR

140,415

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

13:36:05

B

99

196.50

MTA

EUR

140,428

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

13:36:05

B

17

196.50

MTA

EUR

140,427

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

13:48:06

B

13

196.95

MTA

EUR

140,590

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

13:49:57

B

105

197.40

MTA

EUR

140,628

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

13:49:57

B

40

197.40

MTA

EUR

140,627

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

13:58:13

B

13

197.15

MTA

EUR

140,756

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

13:58:13

B

10

197.15

MTA

EUR

140,755

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

13:58:46

B

125

197.15

MTA

EUR

140,770

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

14:09:38

B

14

197.45

MTA

EUR

140,999

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

14:10:28

B

50

197.50

MTA

EUR

141,026

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

14:10:28

B

50

197.50

MTA

EUR

141,025

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

14:10:28

B

8

197.50

MTA

EUR

141,024

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

14:10:41

B

70

197.50

MTA

EUR

141,029

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

14:20:26

B

174

197.70

MTA

EUR

141,218

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

14:30:41

B

20

196.65

MTA

EUR

142,147

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

14:30:46

B

33

196.65

MTA

EUR

142,165

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

14:30:46

B

50

196.65

MTA

EUR

142,164

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

14:30:46

B

100

196.65

MTA

EUR

142,162

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

14:41:45

B

89

196.10

MTA

EUR

142,574

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

14:41:45

B

46

196.10

MTA

EUR

142,573

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

14:41:45

B

25

196.10

MTA

EUR

142,572

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

14:41:45

B

40

196.10

MTA

EUR

142,571

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

14:53:43

B

178

195.50

MTA

EUR

142,973

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

15:03:14

B

225

194.95

MTA

EUR

143,289

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

15:14:18

B

54

194.80

MTA

EUR

143,907

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

15:14:18

B

40

194.80

MTA

EUR

143,905

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

15:14:18

B

14

194.80

MTA

EUR

143,904

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

15:14:18

B

19

194.80

MTA

EUR

143,903

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

15:14:18

B

40

194.75

MTA

EUR

143,902

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

15:14:18

B

19

194.75

MTA

EUR

143,901

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

15:14:18

B

40

194.75

MTA

EUR

143,900

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

15:14:18

B

17

194.70

MTA

EUR

143,899

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

15:14:18

B

6

194.70

MTA

EUR

143,898

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

15:14:18

B

11

194.70

MTA

EUR

143,895

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

15:25:49

B

327

194.70

MTA

EUR

144,310

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

15:25:49

B

35

194.70

MTA

EUR

144,309

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

15:25:49

B

13

194.70

MTA

EUR

144,308

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

15:37:09

B

350

194.70

MTA

EUR

144,806

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

15:48:05

B

7

194.40

MTA

EUR

145,371

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

15:48:08

B

5

194.40

MTA

EUR

145,372

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

15:48:12

B

250

194.45

MTA

EUR

145,387

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

15:48:12

B

15

194.45

MTA

EUR

145,386

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

15:58:46

B

27

193.95

MTA

EUR

145,761

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

15:58:46

B

200

193.95

MTA

EUR

145,760

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

15:58:46

B

50

193.95

MTA

EUR

145,759

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

16:09:56

B

84

194.15

MTA

EUR

146,195

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

16:09:56

B

138

194.15

MTA

EUR

146,194

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

16:21:15

B

161

193.75

MTA

EUR

146,527

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

16:21:15

B

42

193.75

MTA

EUR

146,526

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

16:21:15

B

13

193.75

MTA

EUR

146,525

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

16:31:26

B

13

194.00

MTA

EUR

146,877

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

16:31:26

B

78

194.00

MTA

EUR

146,876

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

16:31:26

B

16

194.00

MTA

EUR

146,875

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

16:31:26

B

23

194.00

MTA

EUR

146,874

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

16:31:26

B

77

194.00

MTA

EUR

146,873

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

16:31:26

B

25

194.00

MTA

EUR

146,872

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

16:31:26

B

42

194.00

MTA

EUR

146,871

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

16:42:42

B

143

193.80

MTA

EUR

147,237

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

16:42:42

B

160

193.80

MTA

EUR

147,236

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

16:53:38

B

44

194.05

MTA

EUR

147,501

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

16:53:38

B

200

194.05

MTA

EUR

147,500

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

16:53:38

B

48

194.05

MTA

EUR

147,499

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

17:05:48

B

149

194.10

MTA

EUR

147,836

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

17:05:48

B

50

194.10

MTA

EUR

147,835

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

17:05:48

B

53

194.10

MTA

EUR

147,834

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

17:15:24

B

33

194.15

MTA

EUR

148,236

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

17:15:24

B

217

194.15

MTA

EUR

148,235

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

17:15:24

B

33

194.15

MTA

EUR

148,234

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

17:15:24

B

25

194.15

MTA

EUR

148,233

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

17:15:24

B

60

194.15

MTA

EUR

148,232

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

17:26:18

B

52

194.25

MTA

EUR

148,711

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

17:26:28

B

45

194.30

MTA

EUR

148,733

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

17:26:28

B

40

194.30

MTA

EUR

148,732

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

17:26:28

B

2

194.30

MTA

EUR

148,731

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

17:26:28

B

31

194.30

MTA

EUR

148,730

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

17:27:19

B

20

194.35

MTA

EUR

148,770

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

17:27:19

B

16

194.35

MTA

EUR

148,769

DIASORIN

Mediobanca S.p.A.

362

IT0003492391

03/11/2021

17:27:27

B

9

194.40

MTA

EUR

148,776

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DiaSorin S.p.A. published this content on 05 November 2021 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 05 November 2021 10:36:02 UTC.