Notification of Major Holdings1. Details of issuer	| Siltronic AG Hanns-Seidel-Platz 4
 81737 Munich
 Germany
 | 
2. Reason for notification	| X | Acquisition/disposal of shares with voting rights | 
	|  | Acquisition/disposal of instruments | 
	|  | Change of breakdown of voting rights | 
	| X | Other reason: Acting in Concert
 | 
3. Details of person subject to the notification obligation	| Name: | City and country of registered office: | 
	| J.P.Morgan Investment Management Inc. | Wilmington, Delaware United States of America (USA)
 | 
4. Names of shareholder(s)holding directly 3% or more voting rights, if different from 3.
5. Date on which threshold was crossed or reached:6. Total positions	|  | % of voting rights attached to shares (total of 7.a.)
 | % of voting rights through instruments (total of 7.b.1 + 7.b.2)
 | total of both in % (7.a. + 7.b.)
 | total number of voting rights of issuer | 
	| Resulting situation | 3.23 % | 0.00 % | 3.23 % | 30000000 | 
	| Previous notification | 2.95 % | 0.00 % | 2.95 % | / | 
7. Notified details of the resulting situationa. Voting rights attached to shares (Sec.s 33, 34 WpHG)	| ISIN | absolute | in % | 
	|  | direct (Sec. 33 WpHG)
 | indirect (Sec. 34 WpHG)
 | direct (Sec. 33 WpHG)
 | indirect (Sec. 34 WpHG)
 | 
	| DE000WAF3001 |  | 967994 | % | 3.23 % | 
	| Total | 967994 | 3.23 % | 
b.1. Instruments according to Sec. 38 para. 1 No. 1 WpHG	| Type of instrument | Expiration or maturity date | Exercise or conversion period | Voting rights absolute | Voting rights in % | 
	|  |  |  |  | % | 
	|  |  | Total |  | % | 
b.2. Instruments according to Sec. 38 para. 1 No. 2 WpHG	| Type of instrument | Expiration or maturity date | Exercise or conversion period | Cash or physical settlement | Voting rights absolute | Voting rights in % | 
	|  |  |  |  |  | % | 
	|  |  |  | Total |  | % | 
8. Information in relation to the person subject to the notification obligation	| X | Person subject to the notification obligation is not controlled and does itself not control any other undertaking(s) holding directly or indirectly an interest in the (underlying) issuer (1.). | 
	|  | Full chain of controlled undertakings starting with the ultimate controlling natural person or legal entity: | 
	| Name | % of voting rights (if at least held 3% or more) | % of voting rights through instruments (if at least held 5% or more) | Total of both (if at least held 5% or more) | 
	|  |  |  |  | 
9. In case of proxy voting according to Sec. 34 para. 3 WpHG	| Date of general meeting: |  | 
	| Holding position after general meeting: | % (equals   voting rights) | 
10. Other explanatory remarks: