![Andrea Sieber](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Andrea Sieber
Director/Board Member at
ALLREAL HOLDING AG
Net worth: 414 164 $ as of 31/07/2026
Profile
Andrea Sieber is Vice Chairman at Allreal Holding AG since 2016.
Director at SoftwareONE Holding AG starting 2024.
Director at Calida Holding AG starting 2025.
Director at Inergies Capital AG.
Director at Borderfree PayCo. Switzerland GmbH.
Partner at MLL Meyerlustenberger Lachenal Froriep AG since 2011.
Former Chairman-Supervisory Board at Meyer Burger (Germany) AG from 2011 to 2017.
Former Chairman-Supervisory Board at Meyer Burger GmbH.
Graduated from the University of California, Davis in 2007.
Graduated from the University of St. Gallen in 2001.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 31/12/2025 | 27,341 ( 0.01% ) | 297 049 $ | 31/07/2026 | |
| 31/12/2025 | 448 ( 0% ) | 117 115 $ | 31/07/2026 |
Andrea Sieber active positions
| Companies | Position | Start |
|---|---|---|
| ALLREAL HOLDING AG | Director/Board Member | 15/04/2016 |
| SOFTWAREONE HOLDING AG | Director/Board Member | 18/04/2024 |
| CALIDA HOLDING AG | Director/Board Member | 08/04/2025 |
MLL Meyerlustenberger Lachenal Froriep AG
 MLL Meyerlustenberger Lachenal Froriep AG Miscellaneous Commercial ServicesCommercial Services Operates a law firm | Corporate Officer/Principal | 01/01/2011 |
Pitney Bowes PayCo Switzerland GmbH | Director/Board Member | - |
Inergies Capital AG | Director/Board Member | - |
Former positions of Andrea Sieber
| Companies | Position | End |
|---|---|---|
| ROTH & RAU AG | Chairman | 01/12/2017 |
Meyer Burger GmbH
 Meyer Burger GmbH Wholesale DistributorsDistribution Services Distributes photovoltaic products | Chairman | - |
Training of Andrea Sieber
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
75
1st degree connections
10
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 10 |
|---|---|
Allreal Holding AG
 Allreal Holding AG Real Estate DevelopmentFinance Engages in real estate development, investment and management services | Finance |
Calida Holding AG
 Calida Holding AG Apparel/FootwearConsumer Non-Durables Manufactures underwear and lingerie products | Consumer Non-Durables |
Meyer Burger (Germany) AG
 Meyer Burger (Germany) AG Industrial MachineryProducer Manufacturing Manufactures plasma processing equipment for the photovoltaic industry | Producer Manufacturing |
University of California, Davis
 University of California, Davis Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
University of St. Gallen
 University of St. Gallen Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Inergies Capital AG | |
MLL Meyerlustenberger Lachenal Froriep AG
MLL Meyerlustenberger Lachenal Froriep AG Miscellaneous Commercial ServicesCommercial Services Operates a law firm | Commercial Services |
SoftwareONE Holding AG
 SoftwareONE Holding AG Electronics DistributorsDistribution Services Offers portfolio management software and clod computing solutions | Distribution Services |
Meyer Burger GmbH
Meyer Burger GmbH Wholesale DistributorsDistribution Services Distributes photovoltaic products | Distribution Services |
Pitney Bowes PayCo Switzerland GmbH |
- Stock Market
- Insiders
- Andrea Sieber
