Vault-13

TWELVE SEAS INVT CO III TWLV

ORD SHS CL A · Common Stock · CUSIP G9145D101

48 institutional holders +9 vs Q1 2026
15,148,28415.1m shares reported held*
$151.4mreported value*
9 new 7 added 7 reduced 0 sold out net bought ≈ $15.4m (+1.5m 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 ≈ $9.99.

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

0204060Q1 26: 39Q2 26: 4848Q1 26Q2 26
Numbers
QuarterHolders
Q1 202639
Q2 202648

Biggest buyers

HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND New +800,000+800.0k
WOLVERINE ASSET MANAGEMENT LLC Added +236,541+236.5k
Wealthspring Capital LLC New +224,190+224.2k
MILLENNIUM MANAGEMENT LLC New +150,000+150.0k
Clear Street Group Inc. Added +136,834+136.8k
Cable Car Capital, LP New +100,000+100.0k
Parallax Volatility Advisers, L.P. Added +47,101+47.1k
StoneX Group Inc. New +29,995+30.0k
Tuttle Capital Management, LLC New +28,462+28.5k
Periscope Capital Inc. Added +25,000+25.0k

Biggest sellers

Shaolin Capital Management LLC Reduced -162,452-162.5k
K2 PRINCIPAL FUND, L.P. Reduced -50,000-50.0k
Karpus Management, Inc. Reduced -40,000-40.0k
Crossingbridge Advisors, LLC Reduced -30,000-30.0k
TORONTO DOMINION BANK Reduced -17,302-17.3k
Schonfeld Strategic Advisors LLC Reduced -149-149
MORGAN STANLEY Reduced -15-15

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
Twelve Seas Sponsor LLC 13D · may seek influence new · filed 2025-12-22
Stated purposeIn connection with the organization of the Issuer, in December 2024, 5,692,500 Class B Ordinary Shares, of which up 742,500 were subject to forfeiture if the underwriter's over-allotment option was not exercised in full (the "Founder Shares") were purchased by the Sponsor for the amount of $25,000, pursuant to a Securities Subscription Agreement, dated as of December 4, 2024 by and between the Sponsor and the Issuer (the "Founder Share Purchase Agreement"), as more fully described in Item 6 of this Schedule 13D which information is incorporated herein by reference. On December 15, 2025, simultaneously with the consummation of the Issuer's Initial Public Offering (the "IPO"), the Sponsor purchased 300,000 Private Placement Units of the Issuer at $10.00 per Private Placement Unit, pursuant t… Full filing
 25.6% new 6.0m≈ $59.9m 2025-12-22
Adage Capital Management, L.P. 13G · institution new · filed 2026-02-12 7.6% new 1.4m≈ $13.5m 2026-02-12

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
101Q4 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: 1 buyingQ4 25: 0 sellingQ1 26: 0 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 20251$3.0m0——
Q1 20260—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 $13.5m $13.5m 0.02% Unchanged
2 Linden Advisors LP 0.05% of their portfolio New York, NY 900,000900.0k $9.0m $9.0m 0.05% Unchanged
3 TENOR CAPITAL MANAGEMENT Co., L.P. 0.11% of their portfolio NEW YORK, NY 800,000800.0k $8.0m $8.0m 0.11% Unchanged
4 HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.01% of their portfolio TORONTO, A6 800,000800.0k $8.0m $8.0m 0.01% New
5 AQR Arbitrage LLC 0.11% of their portfolio Greenwich, CT 757,538757.5k $7.6m $7.6m 0.11% Added +13.5k +13,500
6 ARISTEIA CAPITAL, L.L.C. 0.09% of their portfolio GREENWICH, CT 600,000600.0k $6.0m $6.0m 0.09% Unchanged
7 Polar Asset Management Partners Inc. 0.11% of their portfolio TORONTO, A6 600,000600.0k $6.0m $6.0m 0.11% Unchanged
8 Alberta Investment Management Corp 0.03% of their portfolio EDMONTON, A0 600,000600.0k $6.0m $6.0m 0.03% Unchanged
9 Radcliffe Capital Management, L.P. 0.38% of their portfolio BALA CYNWYD, PA 500,000500.0k $5.0m $5.0m 0.38% Unchanged
10 RIVERNORTH CAPITAL MANAGEMENT, LLC 0.24% of their portfolio WEST PALM BEACH, FL 500,000500.0k $5.0m $5.0m 0.24% Unchanged
11 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 462,114462.1k $4.6m $4.6m 0.00% Unchanged
12 WOLVERINE ASSET MANAGEMENT LLC 0.05% of their portfolio CHICAGO, IL 402,063402.1k $4.0m $4.0m 0.05% Added +236.5k +236,541
13 COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.02% of their portfolio HARRISBURG, PA 400,000400.0k $4.0m $4.0m 0.02% Unchanged
14 MMCAP International Inc. SPC 0.34% of their portfolio GRAND CAYMAN, E9 400,000400.0k $4.0m $4.0m 0.34% Unchanged
15 Magnetar Financial LLC 0.04% of their portfolio EVANSTON, IL 400,000400.0k $4.0m $4.0m 0.04% Unchanged
16 PICTON MAHONEY ASSET MANAGEMENT 0.04% of their portfolio Toronto, A6 400,000400.0k $4.0m $4.0m 0.04% Unchanged
17 BlueCrest Capital Management Ltd 0.17% of their portfolio ST HELIER, Y9 400,000400.0k $4.0m $4.0m 0.17% Unchanged
18 GLAZER CAPITAL, LLC 0.09% of their portfolio New York, NY 352,373352.4k $3.5m $3.5m 0.09% Added +1.9k +1,924
19 HEIGHTS CAPITAL MANAGEMENT, INC 0.81% of their portfolio SAN FRANCISCO, CA 350,000350.0k $3.5m $3.5m 0.81% Unchanged
20 Hudson Bay Capital Management LP 0.02% of their portfolio STAMFORD, CT 350,000350.0k $3.5m $3.5m 0.02% Unchanged
21 Periscope Capital Inc. 0.56% of their portfolio Toronto, A6 350,000350.0k $3.5m $3.5m 0.56% Added +25.0k +25,000
22 Shaolin Capital Management LLC 0.19% of their portfolio Miami, FL 329,200329.2k $3.3m $3.3m 0.19% Reduced -162.5k -162,452
23 SONA ASSET MANAGEMENT (US) LLC 0.11% of their portfolio NEW YORK, NY 301,000301.0k $3.0m $3.0m 0.11% Unchanged
24 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 271,875271.9k $2.7m $2.7m 0.00% Unchanged
25 Crossingbridge Advisors, LLC 0.48% of their portfolio PLEASANTVILLE, NY 270,000270.0k $2.7m $2.7m 0.48% Reduced -30.0k -30,000
26 Schonfeld Strategic Advisors LLC 0.01% of their portfolio NEW YORK, NY 250,280250.3k $2.5m $2.5m 0.01% Reduced -149 -149
27 MOORE CAPITAL MANAGEMENT, LP 0.06% of their portfolio NEW YORK, NY 250,000250.0k $2.5m $2.5m 0.06% Unchanged
28 Karpus Management, Inc. 0.07% of their portfolio Pittsford, NY 237,715237.7k $2.4m $2.4m 0.07% Reduced -40.0k -40,000
29 Wealthspring Capital LLC 0.50% of their portfolio WEST HARRISON, NY 224,190224.2k $2.2m $2.2m 0.50% New
30 Clear Street Group Inc. 0.01% of their portfolio NEW YORK, NY 222,084222.1k $2.2m $2.2m 0.01% Added +136.8k +136,834
31 WHITEBOX ADVISORS LLC 0.02% of their portfolio MINNEAPOLIS, MN 150,000150.0k $1.5m $1.5m 0.02% Unchanged
32 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 150,000150.0k $1.5m $1.5m 0.00% New
33 Parallax Volatility Advisers, L.P. 0.05% of their portfolio San Francisco, CA 138,710138.7k $1.4m $1.4m 0.05% Added +47.1k +47,101
34 Mint Tower Capital Management B.V. 0.12% of their portfolio AMSTERDAM, P7 100,000100.0k $999.0k $999.0k 0.12% Unchanged
35 Cable Car Capital, LP 0.04% of their portfolio SAN FRANCISCO, CA 100,000100.0k $999.0k $999.0k 0.04% New
36 BERKLEY W R CORP 0.05% of their portfolio Greenwich, CT 99,10099.1k $990.0k $990.0k 0.05% Unchanged
37 BOOTHBAY FUND MANAGEMENT, LLC 0.01% of their portfolio NEW YORK, NY 75,00075.0k $749.2k $749.2k 0.01% Unchanged
38 TORONTO DOMINION BANK 0.00% of their portfolio TORONTO, ONTARIO, A6 50,00050.0k $499.5k $499.5k 0.00% Reduced -17.3k -17,302
39 K2 PRINCIPAL FUND, L.P. 0.05% of their portfolio TORONTO, A6 50,00050.0k $499.5k $499.5k 0.05% Reduced -50.0k -50,000
40 Dakota Wealth Management 0.01% of their portfolio PALM BEACH GARDENS, FL 47,84347.8k $478.0k $478.0k 0.01% Unchanged
41 ABC ARBITRAGE SA 0.04% of their portfolio PARIS, I0 40,00040.0k $399.6k $399.6k 0.04% Unchanged
42 StoneX Group Inc. 0.01% of their portfolio NEW YORK, NY 29,99530.0k $299.6k $299.6k 0.01% New
43 Tuttle Capital Management, LLC 0.19% of their portfolio RIVERSIDE, CT 28,46228.5k $284.3k $284.3k 0.19% New
44 Limestone Investment Advisors LP 0.12% of their portfolio NEW YORK, NY 23,21023.2k $231.9k $231.9k 0.12% New
45 Virtu Financial LLC 0.01% of their portfolio New York, NY 20,38720.4k $204.0k $204.0k 0.01% Added +5.0k +4,968
46 Evercore Wealth Management, LLC 0.00% of their portfolio New York, NY 13,61013.6k $136.0k $136.0k 0.00% New
47 Arax Advisory Partners 0.00% of their portfolio NEW YORK, NY 1,5001.5k $15.0k $15.0k 0.00% New
48 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 3535 $350 $350 0.00% Reduced -15 -15