Illumination Acquisition 1 Sponsor LLC - 02 Mar 2026 SCHEDULE 13D Report for Illumination Acquisition Corp. I Class A ordinary shares

Filing manager: Illumination Acquisition 1 Sponsor LLC
Reporting owner: Illumination Acquisition 1 Sponsor LLC
Security: Illumination Acquisition Corp. I Class A ordinary shares
Beneficially owned shares: 8,031,667 shares
Large-stake signal: Form
SCHEDULE 13D
Active or control-oriented beneficial ownership filing.
Ownership
26%
Beneficial ownership of this reported class.
Shares
8,031,667 shares
Shares beneficially owned as disclosed.
Event date
02 Mar 2026
Date tied to the ownership event or amendment.
Accepted by SEC
05 Mar 2026
EDGAR acceptance date.
How to read this large-stake filing
Schedule 13D/G filings focus on beneficial ownership stakes, not a full portfolio.
Compare this filing with the holder history and issuer page before treating the percentage as a current position.
Use amendments to understand whether the disclosed stake increased, decreased, or changed reporting status.
Class ownership: 26%
Shares outstanding: 31,251,623 shares
SEC form: SCHEDULE 13D
Accepted by SEC: 05 Mar 2026, 16:35:52 UTC
Event date: 02 Mar 2026
Source filing: View source filing

Key filing fact

Illumination Acquisition 1 Sponsor LLC disclosed 26% ownership in Illumination Acquisition Corp. I Class A ordinary shares on 02 Mar 2026.

Key facts

Illumination Acquisition 1 Sponsor LLC filed SCHEDULE 13D for Illumination Acquisition Corp. I Class A ordinary shares.
Disclosed ownership: 26%.
Date of event: 02 Mar 2026.

This page turns one Schedule 13D/G filing into a quick large-stake read before the raw reporting-person rows.
Use the linked SEC filing as the source of truth for ownership percentages, shares, and reporting-party details.

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

Reporting persons

Names, ownership percentages, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.

Name	Ownership	Shares owned	Sole voting power	Shared voting power	Signature	Title	CIK
Illumination Acquisition 1 Sponsor LLC	26%	8,031,667	8,031,667	0	/s/ John Lipman	John Lipman, Chief Executive Officer	0002101134
LIPMAN JOHN C	26%	8,031,667	0	8,031,667	/s/ John Lipman	John Lipman	0001383194
Rosenberg David I.	26%	8,031,667	0	8,031,667	/s/ David Rosenberg	David Rosenberg	0001842508

CIK / CUSIP context first

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