JOHN SISK & SON (HOLDINGS) LIMITED
JOHN SISK & SON (HOLDINGS) LIMITED is a Private limited company (Ltd.) registered in Ireland under IE241278, and its current status with Companies Registration Office (CRO) is active. The company was incorporated on 23 November 1995 and lists its registered address as CITYWEST BUSINESS CAMPUS, Ireland. 2 shareholders are on record for JOHN SISK & SON (HOLDINGS) LIMITED, and since every one of them is a company rather than an individual, this particular filing does not on its own establish an ultimate beneficial owner (UBO) — identifying one would mean tracing the ownership of each shareholding company in turn. This profile is sourced directly from Companies Registration Office (CRO) and was last updated on 24 September 2026.
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Shareholders
2
Two shareholders are currently on record for JOHN SISK & SON (HOLDINGS) LIMITED, held on the Annual Return (Form B1), filed under section 342 of the Companies Act 2014.
The largest of these is SICON CONSTRUCTION HOLDINGS LIMITED, holding 100% — a majority holding — followed by SICON CONSTRUCTION HOLDINGS LIMITED at 0%.
Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| SICON CONSTRUCTION HOLDINGS LIMITED | 100% | Companies Registration Office (CRO) | |
| SICON CONSTRUCTION HOLDINGS LIMITED | 0% | Companies Registration Office (CRO) |
Officers
5
The Director of JOHN SISK & SON (HOLDINGS) LIMITED on record is THOMAS COSTELLO; 5 officers are shown here, filed with Companies Registration Office (CRO).
The register reports 32 officers in total, including past appointments, though only the 5 most relevant records are shown here.
Management authority at JOHN SISK & SON (HOLDINGS) LIMITED 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
JOHN SISK & SON (HOLDINGS) LIMITED sits 2 levels below its ultimate parent, SICON LIMITED, registered in Ireland. 14 subsidiaries are recorded beneath it, across 3 jurisdictions. Immediately above JOHN SISK & SON (HOLDINGS) LIMITED is SICON CONSTRUCTION HOLDINGS LIMITED, holding 100% as filed in JOHN SISK & SON (HOLDINGS) LIMITED's own shareholder record with Companies Registration Office (CRO). SICON LIMITED sits further up the chain, a link derived by walking shareholder filings across jurisdictions rather than stated in a single document. 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 14 subsidiaries span Ireland, United Kingdom, Netherlands jurisdictions, 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. Five of the 14 go a level deeper still, with their own further subsidiaries recorded beneath them — additional ownership layers this view doesn't expand.
SICON LIMITED
Ireland
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Frequently Asked Questions
Who owns JOHN SISK & SON (HOLDINGS) LIMITED?
Two shareholders are currently on record for JOHN SISK & SON (HOLDINGS) LIMITED, held on the Annual Return (Form B1), filed under section 342 of the Companies Act 2014. The largest of these is SICON CONSTRUCTION HOLDINGS LIMITED, holding 100% — a majority holding — followed by SICON CONSTRUCTION HOLDINGS LIMITED at 0%. Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
Who is JOHN SISK & SON (HOLDINGS) LIMITED's UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for JOHN SISK & SON (HOLDINGS) LIMITED is itself a company rather than a natural person, so no Ultimate Beneficial Owner (UBO) is identified at this level; establishing one would require tracing the ownership of each shareholding company in turn.
How many shareholders does JOHN SISK & SON (HOLDINGS) LIMITED have on record?
2 shareholders are shown on record for JOHN SISK & SON (HOLDINGS) LIMITED.
What is JOHN SISK & SON (HOLDINGS) LIMITED's company registration number?
JOHN SISK & SON (HOLDINGS) LIMITED's registration number is IE241278, filed with Companies Registration Office (CRO) in Ireland. Its current status on the register is active.
Is JOHN SISK & SON (HOLDINGS) LIMITED still an active company?
JOHN SISK & SON (HOLDINGS) LIMITED's status on Companies Registration Office (CRO) is listed as active.
When was JOHN SISK & SON (HOLDINGS) LIMITED incorporated?
JOHN SISK & SON (HOLDINGS) LIMITED was incorporated on 23 November 1995, according to Companies Registration Office (CRO).
What is JOHN SISK & SON (HOLDINGS) LIMITED's registered address?
The registered address on file for JOHN SISK & SON (HOLDINGS) LIMITED is CITYWEST BUSINESS CAMPUS, Ireland.
What legal structure is JOHN SISK & SON (HOLDINGS) LIMITED registered as?
JOHN SISK & SON (HOLDINGS) LIMITED is registered as a Private limited company (Ltd.) in Ireland.
Who are the officers/directors of JOHN SISK & SON (HOLDINGS) LIMITED?
The Director of JOHN SISK & SON (HOLDINGS) LIMITED on record is THOMAS COSTELLO; 5 officers are shown here, filed with Companies Registration Office (CRO). Management authority at JOHN SISK & SON (HOLDINGS) LIMITED sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does JOHN SISK & SON (HOLDINGS) LIMITED have a parent company or subsidiaries?
JOHN SISK & SON (HOLDINGS) LIMITED sits 2 levels below its ultimate parent, SICON LIMITED, registered in Ireland. 14 subsidiaries are recorded beneath it, across 3 jurisdictions. Those 14 subsidiaries span Ireland, United Kingdom, Netherlands jurisdictions, 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. Five of the 14 go a level deeper still, with their own further subsidiaries recorded beneath them — additional ownership layers this view doesn't expand.
Can Zavia monitor changes to JOHN SISK & SON (HOLDINGS) LIMITED's ownership over time?
This profile reflects a point-in-time snapshot from Companies Registration Office (CRO). Zavia's monitoring API can track changes to JOHN SISK & SON (HOLDINGS) LIMITED's registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.
Can I access JOHN SISK & SON (HOLDINGS) LIMITED's data through an API?
Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including Ireland, so records like JOHN SISK & SON (HOLDINGS) LIMITED'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 Companies Registration Office (CRO) and was last synced on 24 September 2026.