Comparable stake leader
Armada Sponsor III LLC
SEC ownership of Armada Acquisition Corp. III
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0002092897.
Disclosed value leader
Armada Sponsor III LLC
Comparable rows
35/50
Latest evidence
31 Mar 2026
- Public ticker
- AACI, AACIU, AACIW 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
-
Armada Sponsor III LLC
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
35 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Armada Sponsor III LLC
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
31 Mar 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0002092897
- Issuer location
- Carmana Bay
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 Armada Acquisition Corp. III (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
Armada Sponsor III LLC
Disclosed value leader
Armada Sponsor III LLC
Comparable rows
35/50
Latest evidence
31 Mar 2026
13D/G
3/4/5
13F
Lead comparable stake: 25%
15 rows are not safely comparable across share classes.
13D/G row: Armada Sponsor III LLC
Showing 1-8 of 50 holder rows.
Quick read
Armada Sponsor III LLC leads the comparable SEC ownership view at 25%.
35 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 Armada Sponsor III LLC's linked filing trail.
Comparable ownership
Top 5
Armada Sponsor III LLC
25%
Adage Capital Management, L.P.
7.9%
Linden Capital L.P.
5.5%
ARISTEIA CAPITAL, L.L.C.
4.9%
LINDEN ADVISORS LP
4.1%
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 |
|---|---|---|---|---|---|
| Armada Sponsor III LLC |
13D/G
3/4/5
10%+ Owner
|
25%
|
$86,441,812
8,652,834 shares
|
$0 | 17 Feb 2026 |
| Adage Capital Management, L.P. |
13D/G
|
7.9%
|
$20,229,750
2,025,000 shares
|
$0 | 31 Mar 2026 |
| Linden Capital L.P. |
13D/G
|
5.5%
|
—
1,400,000 shares
|
$0 | 23 Feb 2026 |
| ARISTEIA CAPITAL, L.L.C. |
13F
Company
|
4.9%
|
$16,500,055
1,656,632 shares
|
— | 31 Mar 2026 |
| LINDEN ADVISORS LP |
13F
Company
|
4.1%
|
$13,986,000
1,400,000 shares
|
— | 31 Mar 2026 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND |
13F
Company
|
3.2%
|
$10,989,000
1,100,000 shares
|
— | 31 Mar 2026 |
| Magnetar Financial LLC |
13F
Company
|
2.9%
|
$9,990,000
1,000,000 shares
|
— | 31 Mar 2026 |
| LMR Partners LLP |
13F
Company
|
2.9%
|
$9,960,000
1,000,000 shares
|
— | 31 Mar 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 04 Aug 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 1-6 of 6 reporting-owner rows connected to Armada Acquisition Corp. III. Open a relationship link for the CIK-to-CIK filing trail.
Rows
6
Largest Forms 3/4/5 holder
Douglas M. Lurio
Net 12M change
$0
Latest report
19 Feb 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Douglas M. Lurio | Officer, Director, 10%+ Owner | $3,992,000 | Mixed | 19 Feb 2026 | ||
| Stephen P. Herbert | Chief Executive Officer, Chairman, and Director, Director, 10%+ Owner | $3,992,000 | Mixed | 19 Feb 2026 | ||
| Mohammad Anwar Khan | Director | Mixed | 17 Feb 2026 | |||
| Armada Sponsor III LLC | 10%+ Owner | Mixed | 19 Feb 2026 | |||
| Celso L. White | Director | Mixed | 17 Feb 2026 | |||
| Thomas A. Decker | Director | Mixed | 17 Feb 2026 |
Recent insider transactions for Armada Acquisition Corp. III
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Stephen P. Herbert | AACIU | Class B Ordinary Shares | Other | -4.01% | -345,083 | 8,252,834 | 19 Feb 2026 | Armada Sponsor III LLC | ||
| Douglas M. Lurio | AACIU | Class B Ordinary Shares | Other | -4.01% | -345,083 | 8,252,834 | 19 Feb 2026 | Armada Sponsor III LLC | ||
| Armada Sponsor III LLC | AACI | Class B Ordinary Shares | Other | -4.01% | -345,083 | 8,252,834 | 19 Feb 2026 | Direct |
* marks a reported price that did not pass the local price check.