Vault-13

STONEBRIDGE ACQUISITION II C APACU

UNIT 09/09/2030 · Unit · CUSIP G85096124

11 institutional holders -21 vs Q3 2025
1,213,2151.2m shares reported held*
$12.2mreported value*
1 new 3 added 3 reduced 21 sold out net sold ≈ $39.9m (-4.0m 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 ≈ $10.04.

Trends to Q4 2025

Institutional holders

Managers reporting a position, each quarter

02040Q3 25: 32Q4 25: 1111Q3 25Q4 25
Numbers
QuarterHolders
Q3 202532
Q4 202511

Biggest buyers

MANGROVE PARTNERS IM, LLC Added +100,000+100.0k
TORONTO DOMINION BANK Added +22,316+22.3k
CITADEL ADVISORS LLC New +14,310+14.3k
HEIGHTS CAPITAL MANAGEMENT, INC Added +500+500

Biggest sellers

GLAZER CAPITAL, LLC Sold out -400,000-400.0k
Decagon Asset Management LLP Sold out -396,557-396.6k
AQR Arbitrage LLC Sold out -375,000-375.0k
Shaolin Capital Management LLC Sold out -370,000-370.0k
HIGHBRIDGE CAPITAL MANAGEMENT LLC Sold out -365,000-365.0k
Meteora Capital, LLC Sold out -330,499-330.5k
ARISTEIA CAPITAL, L.L.C. Sold out -200,000-200.0k
Verition Fund Management LLC Sold out -200,000-200.0k
Clear Street Group Inc. Reduced -197,416-197.4k
WOLVERINE ASSET MANAGEMENT LLC Sold out -173,730-173.7k

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
MIZUHO FINANCIAL GROUP INC 13G · institution new · filed 2026-02-12 9.0% new 552.1k 2026-02-12
GLAZER CAPITAL, LLC 13G · institution -1.4 pts · filed 2026-02-12 6.6% -1.4 pts 407.1k 2026-02-12
Shaolin Capital Management LLC 13G · passive investor new · filed 2025-11-14 6.3% new 370.0k 2025-11-14
AQR CAPITAL MANAGEMENT LLC 13G · institution new · filed 2025-11-14 6.1% new 375.0k 2025-11-14

Insider purchases and sales in Q4 2025

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.

DateInsiderTradeSharesPrice ValueTheir holding
2025-11-24 MIZUHO SECURITIES USA LLC 10% owner Sold 531,255 $9.95 $5.3m531.3k shares -84%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q4 2025

#ManagerLocationShares Value% of their portfolioChangeShares change
1 RIVERNORTH CAPITAL MANAGEMENT, LLC 0.23% of their portfolio WEST PALM BEACH, FL 494,517494.5k $5.0m $5.0m 0.23% Reduced -483 -483
2 MANGROVE PARTNERS IM, LLC 0.18% of their portfolio Greenwich, CT 225,000225.0k $2.3m $2.3m 0.18% Added +100.0k +100,000
3 TORONTO DOMINION BANK 0.00% of their portfolio TORONTO, ONTARIO, A6 122,316122.3k $1.2m $1.2m 0.00% Added +22.3k +22,316
4 Crossingbridge Advisors, LLC 0.21% of their portfolio PLEASANTVILLE, NY 75,00075.0k $753.0k $753.0k 0.21% Reduced -50.0k -50,000
5 Yakira Capital Management, Inc. 0.22% of their portfolio Westport, CT 65,00065.0k $652.6k $652.6k 0.22% Unchanged
6 Sandia Investment Management LP 1.50% of their portfolio BOSTON, MA 60,00060.0k $602.4k $602.4k 1.50% Unchanged
7 Quarry LP 0.10% of their portfolio NEW YORK, NY 60,00060.0k $603.6k $603.6k 0.10% Unchanged
8 HEIGHTS CAPITAL MANAGEMENT, INC 0.19% of their portfolio SAN FRANCISCO, CA 50,50050.5k $509.0k $509.0k 0.19% Added +500 +500
9 Lineage Point Capital LP 0.15% of their portfolio PALM BEACH, FL 39,80039.8k $400.4k $400.4k 0.15% First filing
10 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 14,31014.3k $144.2k $144.2k 0.00% New
11 Clear Street Group Inc. 0.00% of their portfolio NEW YORK, NY 6,7726.8k $68.0k $68.0k 0.00% Reduced -197.4k -197,416