![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: 413 003 $ as of 2026-05-30
Profile
Andrea Sieber currently works at Allreal Holding AG, as Vice Chairman from 2016, SoftwareONE Holding AG, as Director from 2024, Calida Holding AG, as Director from 2025, Inergies Capital AG, as Director, Borderfree PayCo Switzerland GmbH, as Director, and MLL Meyerlustenberger Lachenal Froriep AG, as Partner from 2011.
Ms. Sieber also formerly worked at Meyer Burger (Germany) AG, as Chairman-Supervisory Board from 2011 to 2017 and Meyer Burger GmbH, as Chairman-Supervisory Board.
Ms. Sieber received her graduate degree in 2007 from the University of California, Davis and graduate degree in 2001 from the University of St. Gallen.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2025-12-30 | 27,341 ( 0.01% ) | 292 883 $ | 2026-05-30 | |
| 2025-12-30 | 448 ( 0% ) | 120 120 $ | 2026-05-30 |
Andrea Sieber active positions
| Companies | Position | Start |
|---|---|---|
| ALLREAL HOLDING AG | Director/Board Member | 2016-04-14 |
| SOFTWAREONE HOLDING AG | Director/Board Member | 2024-04-17 |
| CALIDA HOLDING AG | Director/Board Member | 2025-04-07 |
MLL Meyerlustenberger Lachenal Froriep AG
 MLL Meyerlustenberger Lachenal Froriep AG Miscellaneous Commercial ServicesCommercial Services Operates a law firm | Corporate Officer/Principal | 2010-12-31 |
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 | 2017-11-30 |
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
83
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 |
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