ranQ
ranQ
ranQ
DirectoryIndustriesPlacesKnowledgeComparisonsSoon
Sign inCheck visibility
ranQHSG Startup LabelRecognised by the
HSG Startup Label

The leading AI company directory, built to boost AI visibility.

DEENFRIT
Product
  • Pricing
  • Directory
  • Industries
  • Trust Score
Company
  • About
  • Partner program
  • Contact
  • Legal
© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesCoaching & Personal DevelopmentThalwilVestalia Vision Wirtschafts- und Unternehmensberatung Dr. phil. Sonja A. Buholzer, M.A.
Vestalia Vision Wirtschafts- und Unternehmensberatung Dr. phil. Sonja A. Buholzer, M.A. Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Vestalia Vision is providing executive and management coaching services, particularly in the areas of leadership coaching, performance coaching, executive onboarding, sparring partnership, career coaching, and intercultural management coaching. The company supports executives and decision-makers in developing their skills and strategies to achieve their goals and achieve sustainable success.

AI-generated
Offering

Products & services

Industry:Coaching & Personal Development
✓ Offered5
LeadhubOutbound Leads by COHAGA

Looking for direct email addresses and phone numbers?

Leadhub delivers verified contact details and decision-makers from over 750,000 Swiss companies — management, procurement, marketing, HR.

Discover Leadhub
3.8/5

Vestalia Vision Wirtschafts- und Unternehmensberatung Dr. phil. Sonja A. Buholzer, M.A.

Executive Coaching
Executive coaching as a sparring partnership for CEOs, executive management, leaders and founders; with second opinion, positioning, reputation, media relations and crisis management.
Talks & Keynotes
Talks and keynotes in German and English on leadership, women in leadership positions, agility, sustainability and rethinking; on request with practical tips and discussions on implementation.
Event Moderations
Event moderations for management events, discussions and occasions; listed separately on the website as part of the talks and keynotes offering.
Panel Discussions
Participation in panel discussions on management, leadership and business topics; offered together with talks, keynotes and moderations.
Books and Specialist Publications
Books, audiobooks and specialist publications on management, leadership, women’s careers and sustainability; partly hand-signed and directly orderable.
Trust & reputation

ranQ Trust Score of Vestalia Vision Wirtschafts- und Unternehmensberatung Dr. phil. Sonja A. Buholzer, M.A.: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

Vestalia Vision Wirtschafts- und Unternehmensberatung Dr. phil. Sonja A. Buholzer, M.A. scores 49.8 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.68.224%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.17.610%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.35.08%
Vestalia Vision Wirtschafts- und Unternehmensberatung Dr. phil. Sonja A. Buholzer, M.A. scores 78.5 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
Vestalia Vision Wirtschafts- und Unternehmensberatung Dr. phil. Sonja A. Buholzer, M.A. scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
Vestalia Vision Wirtschafts- und Unternehmensberatung Dr. phil. Sonja A. Buholzer, M.A. scores 28.6 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.28.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Vestalia Vision Wirtschafts- und Unternehmensberatung Dr. phil. Sonja A. Buholzer, M.A. reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 1 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Knowledge

No knowledge articles yet

Once Vestalia Vision Wirtschafts- und Unternehmensberatung Dr. phil. Sonja A. Buholzer, M.A. has claimed this profile, we'll publish editorial articles and case studies here together.

Get started
Comparisons

Vestalia Vision Wirtschafts- und Unternehmensberatung Dr. phil. Sonja A. Buholzer, M.A. in comparison

Soon

Industry comparisons are coming soon

We're preparing industry comparisons that rank Vestalia Vision Wirtschafts- und Unternehmensberatung Dr. phil. Sonja A. Buholzer, M.A. by reviews, experience and specialisations.

Is this your company?

Claim the company profile of Vestalia Vision Wirtschafts- und Unternehmensberatung Dr. phil. Sonja A. Buholzer, M.A. to make its contact details visible. With a plan we additionally create and publish industry comparisons, articles and much more.

Secure profile

Location

Seestrasse 81 a
8800 Thalwil

At a glance

Legal form
Sole proprietorship
UID
CHE-107.646.008
Founded
1994 · 32 years
Last commercial register change
December 21, 2016
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.67.06%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

    Similar companies

    JW
    Jill Wick GmbH
    Adliswil
    HB
    Hailperin Beratung
    Zurich
    BG
    brainability GmbH
    Zurich
    IA
    IKM Allan Guggenbühl AG
    Zurich
    SI
    S&B Institut für Berufs- und Lebensgestaltung AG
    Bülach
    RW
    René Weber Coaching & Beratung GmbH
    Zurich
    WI
    Who is Frank AG
    Zurich
    A-
    ALTERnativa - das alter leben, Luzia Vieli
    Zurich