Comparable stake leader
Illumination Acquisition 1 Sponsor LLC
SEC ownership of Illumination Acquisition Corp. I
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0002101135.
Disclosed value leader
Magnetar Financial LLC
Comparable rows
11/50
Latest evidence
30 Jun 2026
- Public ticker
- ILLU, ILLUU, ILLUW on Nasdaq
- Parsed ownership sources
-
13D/G, 3/4/5, and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Illumination Acquisition 1 Sponsor LLC
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
11 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Illumination Acquisition 1 Sponsor LLC
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
30 Jun 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0002101135
- Issuer location
- New York, NY
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Illumination Acquisition Corp. I (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Illumination Acquisition ...
Disclosed value leader
Magnetar Financial LLC
Comparable rows
11/50
Latest evidence
30 Jun 2026
13D/G
3/4/5
13F
Lead comparable stake: 26%
39 rows are not safely comparable across share classes.
13D/G row: Illumination Acquisition 1 Sponsor LLC
Showing 1-8 of 50 holder rows.
Quick read
Illumination Acquisition 1 Sponsor LLC leads the comparable SEC ownership view at 26%.
11 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Illumination Acquisition 1 Sponsor LLC's linked filing trail.
Comparable ownership
Top 5
Illumination Acquisition 1 Sponso...
26%
Magnetar Financial LLC
7.8%
TWO SIGMA INVESTMENTS, LP
1.5%
WOLVERINE ASSET MANAGEMENT LLC
0.67%
D. E. Shaw & Co., Inc.
0.42%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Illumination Acquisition 1 Sponsor LLC |
13D/G
3/4/5
10%+ Owner
|
26%
|
—
8,031,667 shares
|
$0 | 02 Mar 2026 |
| Magnetar Financial LLC |
13F
13D/G
Company
|
7.8%
from 13D/G
|
$18,617,117
2,466,660 shares
mixed-class rows
|
— | 30 Jun 2026 |
| TWO SIGMA INVESTMENTS, LP |
13F
Company
|
1.5%
|
$3,588,750
362,500 shares
|
— | 30 Jun 2026 |
| WOLVERINE ASSET MANAGEMENT LLC |
13F
Company
|
0.67%
|
$1,576,862
159,279 shares
|
— | 30 Jun 2026 |
| D. E. Shaw & Co., Inc. |
13F
Company
|
0.42%
|
$990,000
100,000 shares
|
— | 30 Jun 2026 |
| DELTEC ASSET MANAGEMENT LLC |
13F
Company
|
0.42%
|
$989,010
99,900 shares
|
— | 30 Jun 2026 |
| Virtu Financial LLC |
13F
Company
|
0.32%
|
$749,000
75,693 shares
|
— | 30 Jun 2026 |
| RLH Capital LLC |
13F
Company
|
0.21%
|
$495,000
50,000 shares
|
— | 30 Jun 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 13 Sep 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-7 of 7 reporting-owner rows connected to Illumination Acquisition Corp. I. Open a relationship link for the CIK-to-CIK filing trail.
Rows
7
Largest Forms 3/4/5 holder
James Edward Manning
Net 12M change
$0
Latest report
13 Apr 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| James Edward Manning | Director | Mixed | 26 Feb 2026 | |||
| Anthony DiGiandomenico | Director | Mixed | 26 Feb 2026 | |||
| Illumination Acquisition 1 Sponsor LLC | 10%+ Owner | Mixed | 26 Feb 2026 | |||
| Steven Neil Kaplan | CFO, Director | Mixed | 26 Feb 2026 | |||
| Mann Paul Elliot | Director | Mixed | 26 Feb 2026 | |||
| Eric Helenek | Director | Mixed | 26 Feb 2026 | |||
| John DeMarais | Coo | Mixed | 13 Apr 2026 |
Recent insider transactions for Illumination Acquisition Corp. I
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Illumination Acquisition 1 Sponsor LLC | Class A Ordinary Shares | 0 | 365,000 | 26 Feb 2026 | By Illumination Acquisition 1 Sponsor LLC |
* marks a reported price that did not pass the local price check.