Vault-13

IRIS ACQUISITION CORP II IRAB

ORD SHS CL A · Common Stock · CUSIP G4940M109

43 institutional holders +11 vs Q1 2026
14,965,60115.0m shares reported held*
$148.6mreported value*
12 new 4 added 3 reduced 1 sold out net bought ≈ $41.1m (+4.1m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $9.93.

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

0204060Q1 26: 32Q2 26: 4343Q1 26Q2 26
Numbers
QuarterHolders
Q1 202632
Q2 202643

Biggest buyers

ARISTEIA CAPITAL, L.L.C. New +1,159,828+1.2m
Magnetar Financial LLC New +600,000+600.0k
MMCAP International Inc. SPC New +600,000+600.0k
MILLENNIUM MANAGEMENT LLC New +425,000+425.0k
Alberta Investment Management Corp New +400,000+400.0k
Crossingbridge Advisors, LLC New +350,000+350.0k
Cable Car Capital, LP New +225,000+225.0k
HEIGHTS CAPITAL MANAGEMENT, INC New +185,000+185.0k
PICTON MAHONEY ASSET MANAGEMENT New +175,000+175.0k
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS Added +150,000+150.0k

Biggest sellers

Shaolin Capital Management LLC Reduced -199,221-199.2k
Clear Street Group Inc. Reduced -64,600-64.6k
Virtu Financial LLC Reduced -11,200-11.2k
ROYAL BANK OF CANADA Sold out -9,885-9.9k

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
Adage Capital Management, L.P. 13G · institution new · filed 2026-05-13 7.8% new 1.4m≈ $13.4m 2026-05-13

Fell to 5% or below in the last year: GOLDMAN SACHS GROUP INC (1.2%, 2026-08-12)

Insider purchases and sales since 1 Apr 2026

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
202Q4 24: 0 buyingQ4 24: 0 sellingQ1 25: 0 buyingQ1 25: 0 sellingQ1 25Q2 25: 0 buyingQ2 25: 0 sellingQ3 25: 0 buyingQ3 25: 0 sellingQ3 25Q4 25: 0 buyingQ4 25: 0 sellingQ1 26: 2 buyingQ1 26: 0 sellingQ1 26Q2 26: 0 buyingQ2 26: 0 sellingQ3 26: 0 buyingQ3 26: 0 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20240—0——
Q1 20250—0——
Q2 20250—0——
Q3 20250—0——
Q4 20250—0——
Q1 20262—0——
Q2 20260—0——
Q3 20260—0——

None reported since 1 Apr 2026.

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 ADAGE CAPITAL PARTNERS GP, L.L.C. 0.02% of their portfolio Boston, MA 1,350,0001.4m $13.4m $13.4m 0.02% Unchanged
2 ARISTEIA CAPITAL, L.L.C. 0.18% of their portfolio GREENWICH, CT 1,159,8281.2m $11.5m $11.5m 0.18% New
3 TENOR CAPITAL MANAGEMENT Co., L.P. 0.14% of their portfolio NEW YORK, NY 1,000,0001.0m $9.9m $9.9m 0.14% Unchanged
4 SONA ASSET MANAGEMENT (US) LLC 0.32% of their portfolio NEW YORK, NY 850,000850.0k $8.4m $8.4m 0.32% Unchanged
5 Linden Advisors LP 0.04% of their portfolio New York, NY 800,000800.0k $7.9m $7.9m 0.04% Unchanged
6 HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.01% of their portfolio TORONTO, A6 800,000800.0k $7.9m $7.9m 0.01% Unchanged
7 MMCAP International Inc. SPC 0.51% of their portfolio GRAND CAYMAN, E9 600,000600.0k $6.0m $6.0m 0.51% New
8 Magnetar Financial LLC 0.05% of their portfolio EVANSTON, IL 600,000600.0k $6.0m $6.0m 0.05% New
9 AQR Arbitrage LLC 0.08% of their portfolio Greenwich, CT 584,964585.0k $5.8m $5.8m 0.08% Added +6.5k +6,500
10 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 546,532546.5k $5.4m $5.4m 0.00% Unchanged
11 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 425,000425.0k $4.2m $4.2m 0.00% New
12 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 420,601420.6k $4.2m $4.2m 0.00% Added +1 +1
13 Alberta Investment Management Corp 0.02% of their portfolio EDMONTON, A0 400,000400.0k $4.0m $4.0m 0.02% New
14 First Trust Capital Management L.P. 0.23% of their portfolio CHICAGO, IL 399,998400.0k $4.0m $4.0m 0.23% Unchanged
15 WHITEBOX ADVISORS LLC 0.06% of their portfolio MINNEAPOLIS, MN 375,200375.2k $3.7m $3.7m 0.06% Unchanged
16 Crossingbridge Advisors, LLC 0.61% of their portfolio PLEASANTVILLE, NY 350,000350.0k $3.5m $3.5m 0.61% New
17 Radcliffe Capital Management, L.P. 0.23% of their portfolio BALA CYNWYD, PA 299,570299.6k $3.0m $3.0m 0.23% Unchanged
18 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 271,875271.9k $2.7m $2.7m 0.00% Unchanged
19 Centiva Capital, LP 0.08% of their portfolio New York, NY 250,700250.7k $2.5m $2.5m 0.08% Unchanged
20 Context Capital Management, LLC 0.05% of their portfolio LAJOLLA, CA 250,000250.0k $2.5m $2.5m 0.05% Unchanged
21 HGC Investment Management Inc. 0.49% of their portfolio TORONTO, A6 250,000250.0k $2.5m $2.5m 0.49% Unchanged
22 Periscope Capital Inc. 0.38% of their portfolio Toronto, A6 241,000241.0k $2.4m $2.4m 0.38% Unchanged
23 COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.01% of their portfolio HARRISBURG, PA 229,662229.7k $2.3m $2.3m 0.01% Added +150.0k +150,000
24 Cable Car Capital, LP 0.10% of their portfolio SAN FRANCISCO, CA 225,000225.0k $2.2m $2.2m 0.10% New
25 Lineage Point Capital LP 0.45% of their portfolio PALM BEACH, FL 220,000220.0k $2.2m $2.2m 0.45% Unchanged
26 GLAZER CAPITAL, LLC 0.05% of their portfolio New York, NY 206,321206.3k $2.0m $2.0m 0.05% Added +4.0k +4,011
27 Shaolin Capital Management LLC 0.11% of their portfolio Miami, FL 200,779200.8k $2.0m $2.0m 0.11% Reduced -199.2k -199,221
28 RIVERNORTH CAPITAL MANAGEMENT, LLC 0.09% of their portfolio WEST PALM BEACH, FL 200,000200.0k $2.0m $2.0m 0.09% Unchanged
29 Verition Fund Management LLC 0.01% of their portfolio GREENWICH, CT 200,000200.0k $2.0m $2.0m 0.01% Unchanged
30 BERKLEY W R CORP 0.10% of their portfolio Greenwich, CT 198,960199.0k $2.0m $2.0m 0.10% Unchanged
31 HEIGHTS CAPITAL MANAGEMENT, INC 0.42% of their portfolio SAN FRANCISCO, CA 185,000185.0k $1.8m $1.8m 0.42% New
32 PICTON MAHONEY ASSET MANAGEMENT 0.02% of their portfolio Toronto, A6 175,000175.0k $1.7m $1.7m 0.02% New
33 Mint Tower Capital Management B.V. 0.18% of their portfolio AMSTERDAM, P7 150,000150.0k $1.5m $1.5m 0.18% Unchanged
34 Polar Asset Management Partners Inc. 0.02% of their portfolio TORONTO, A6 100,000100.0k $993.0k $993.0k 0.02% Unchanged
35 Kepos Capital LP 1.35% of their portfolio NEW YORK, NY 100,000100.0k $993.0k $993.0k 1.35% Unchanged
36 Hudson Bay Capital Management LP 0.00% of their portfolio STAMFORD, CT 98,93898.9k $982.5k $982.5k 0.00% Unchanged
37 WOLVERINE ASSET MANAGEMENT LLC 0.01% of their portfolio CHICAGO, IL 65,04765.0k $645.9k $645.9k 0.01% New
38 MIZUHO SECURITIES USA LLC 0.00% of their portfolio NEW YORK, NY 50,00050.0k $492.5k $492.5k 0.00% New
39 MOORE CAPITAL MANAGEMENT, LP 0.01% of their portfolio NEW YORK, NY 50,00050.0k $496.5k $496.5k 0.01% Unchanged
40 Clear Street Group Inc. 0.00% of their portfolio NEW YORK, NY 30,75630.8k $305.4k $305.4k 0.00% Reduced -64.6k -64,600
41 CSS LLC/IL 0.01% of their portfolio CHICAGO, IL 25,00025.0k $248.2k $248.2k 0.01% New
42 Schonfeld Strategic Advisors LLC 0.00% of their portfolio NEW YORK, NY 15,00015.0k $148.9k $148.9k 0.00% Unchanged
43 Virtu Financial LLC 0.00% of their portfolio New York, NY 14,87014.9k $148.0k $148.0k 0.00% Reduced -11.2k -11,200