Callista Software OÜ
Registration details
Company overview
Callista Software OÜ is a Private limited company (Ltd.) registered in Estonia under 12287975, and its current status with Estonian e-Business Register (ariregister) is active. The company was incorporated on 18 May 2012 and lists its registered address as Tallinn, Estonia. 2 shareholders are on record for Callista Software OÜ, including at least one natural person recorded as a direct holder; the filing carries no beneficial-ownership flag, so that holder is noted here as a recorded shareholder rather than a confirmed ultimate beneficial owner (UBO). This profile is sourced directly from Estonian e-Business Register (ariregister) and was last updated on 9 November 2026.
Officers
2
Registry notes and limitations
Two officers are currently on record for Callista Software OÜ, filed with Estonian e-Business Register (ariregister). Mikk Tarvas and Eerik Kivistik both serve as Juhatuse Liige.
Management authority at Callista Software OÜ sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
The source filing doesn't specify representation authority — whether officers can act individually or must sign jointly to bind the company — so that detail isn't available here.
Group Structure
Callista Software OÜ
Estonia
How these relationships were recorded
Callista Software OÜ has no recorded parent company — it sits at the top of its own group structure, with 1 subsidiary recorded beneath it across 1 jurisdiction. Each of these downward relationships is derived rather than filed: resolved by matching entities across the registry network, not stated directly in a single document.
Those 1 subsidiary spans Estonia jurisdiction, though this list should not be read as complete — subsidiaries only become visible here where shareholder data has actually been filed with a register, so holdings in jurisdictions without that filing simply won't appear.
Frequently asked questions
Who owns Callista Software OÜ?
Two shareholders are currently on record for Callista Software OÜ, filed with Estonian e-Business Register (ariregister). The largest of these is Mikk Tarvas, holding 50% — the largest recorded stake — followed by Eerik Kivistik at 50%. Every shareholder shown is an individual, recorded as a direct holder at this level; the record carries no UBO/PSC flag, so beneficial-owner status is not confirmed here.
Who is Callista Software OÜ's UBO (Ultimate Beneficial Owner)?
At least one shareholder recorded for Callista Software OÜ is a natural person. The record carries no dedicated UBO/PSC flag, so that holder is stated here as a recorded shareholder rather than a confirmed Ultimate Beneficial Owner (UBO).
How many shareholders does Callista Software OÜ have on record?
2 shareholders are shown on record for Callista Software OÜ.
What is Callista Software OÜ's company registration number?
Callista Software OÜ's registration number is 12287975, filed with Estonian e-Business Register (ariregister) in Estonia. Its current status on the register is active.
Is Callista Software OÜ still an active company?
Callista Software OÜ's status on Estonian e-Business Register (ariregister) is listed as active.
When was Callista Software OÜ incorporated?
Callista Software OÜ was incorporated on 18 May 2012, according to Estonian e-Business Register (ariregister).
What is Callista Software OÜ's registered address?
The registered address on file for Callista Software OÜ is Tallinn, Estonia.
What legal structure is Callista Software OÜ registered as?
Callista Software OÜ is registered as a Private limited company (Ltd.) in Estonia.
Who are the officers/directors of Callista Software OÜ?
Two officers are currently on record for Callista Software OÜ, filed with Estonian e-Business Register (ariregister). Mikk Tarvas and Eerik Kivistik both serve as Juhatuse Liige. Management authority at Callista Software OÜ sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does Callista Software OÜ have a parent company or subsidiaries?
Callista Software OÜ has no recorded parent company — it sits at the top of its own group structure, with 1 subsidiary recorded beneath it across 1 jurisdiction. Those 1 subsidiary spans Estonia jurisdiction, though this list should not be read as complete — subsidiaries only become visible here where shareholder data has actually been filed with a register, so holdings in jurisdictions without that filing simply won't appear.
Can Zavia monitor changes to Callista Software OÜ's ownership over time?
This profile reflects a point-in-time snapshot from Estonian e-Business Register (ariregister). Zavia's monitoring API can track changes to Callista Software OÜ's registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.
Can I access Callista Software OÜ's data through an API?
Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including Estonia, so records like Callista Software OÜ's registration, shareholder, UBO, and group-structure data can be queried programmatically instead of viewed one page at a time.
Where does this company information come from, and how current is it?
This record is sourced directly from Estonian e-Business Register (ariregister) and was last synced on 9 November 2026.