Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

MERCER INTERNATIONAL INC.

CIK 0001333274MERC· quarter ending 2026-06-30

Shares outstanding

67,018,033

as of 2026-08-04 · 10-Q cover page, filed 2026-08-06

Held by 13F filers

42,763,538

63.8% of shares outstanding

Holders

-9 vs 2026-03-31 · 7 new, 16 exited

Value

$16.6M

shares -11.3% vs prior quarter

Share classes (cover page of the 10-Q filed 2026-08-06, as of 2026-08-04)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common stock	MERC · NASDAQ	67,018,033	42,763,538	63.8%	67	588056101

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine

Count	CUSIP	Class (as filers write it)	Holders	Shares held	Class shares	% of class	Value	Options	Mapped via
	588056101	COM	67	42,763,538	67,018,033	63.8%	$16.6M	2 call / 1 put	13DG	holders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings. 3 further CUSIPs map to this company (mostly bonds) but no 13F filer held them this quarter.

Top holders (67 of 67 · 588056101)

change vs 2026-03-31

#	Filer	Shares	% of class	Value	Change
1	IAT REINSURANCE CO LTD.	18,220,000	27.19%	$416K	+1,000,000 (+5.8%)
2	REDWOOD CAPITAL MANAGEMENT, LLC	4,648,133	6.94%	$3.1M	—
3	BARCLAYS PLC	3,950,970	5.90%	$2.6M	+630,889 (+19.0%)
4	TORONTO DOMINION BANK	3,300,000	4.92%	$2.2M	—
5	DIMENSIONAL FUND ADVISORS LP	1,963,354	2.93%	$1.3M	-590,732 (-23.1%)
6	WHITEBOX ADVISORS LLC	1,468,738	2.19%	$969K	+411,080 (+38.9%)
7	BlackRock, Inc.	1,209,362	1.80%	$798K	+107,381 (+9.7%)
8	FRANKLIN RESOURCES INC	787,371	1.17%	$520K	—
9	Benefit Street Partners LLC	787,371	1.17%	$520K	—
10	Atlas FRM LLC	596,791	0.89%	$394K	-2,553,209 (-81.1%)
11	D. E. Shaw & Co., Inc.	582,361	0.87%	$384K	-32,862 (-5.3%)
12	GSA CAPITAL PARTNERS LLP	574,502	0.86%	$379K	+69,012 (+13.7%)
13	GEODE CAPITAL MANAGEMENT, LLC	500,415	0.75%	$330K	+22,191 (+4.6%)
14	VANGUARD CAPITAL MANAGEMENT LLC	475,860	0.71%	$314K	-1,784 (-0.4%)
15	Verition Fund Management LLC	408,317	0.61%	$269K	—
16	AEGIS FINANCIAL CORP	308,927	0.46%	$204K	—
17	MARSHALL WACE, LLP	287,868	0.43%	$190K	+147,065 (+104.4%)
18	VANGUARD FIDUCIARY TRUST CO	219,432	0.33%	$145K	+1,784 (+0.8%)
19	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	218,958	0.33%	$145K	-30,288 (-12.2%)
20	STATE STREET CORP	215,631	0.32%	$142K	-482 (-0.2%)
21	BRIDGEWAY CAPITAL MANAGEMENT, LLC	204,636	0.31%	$135K	-184,213 (-47.4%)
22	Squarepoint Ops LLC	161,818	0.24%	$107K	+143,301 (+773.9%)
23	Cerity Partners LLC	150,080	0.22%	$99K	—
24	UBS Group AG	150,027	0.22%	$99K	-24,043 (-13.8%)
25	Merrion Investment Management Co, LLC	150,000	0.22%	$99K	—
26	VANGUARD PORTFOLIO MANAGEMENT LLC	118,044	0.18%	$78K	+1,671 (+1.4%)
27	NORTHERN TRUST CORP	111,221	0.17%	$73K	-7,959 (-6.7%)
28	HRT FINANCIAL LP	106,785	0.16%	$70K	NEW
29	Empowered Funds, LLC	101,736	0.15%	$67K	-50,000 (-33.0%)
30	Jain Global LLC	74,048	0.11%	$49K	+63,873 (+627.7%)
31	RENAISSANCE TECHNOLOGIES LLC	62,511	0.09%	$41K	+46,500 (+290.4%)
32	TUDOR INVESTMENT CORP ET AL	56,485	0.08%	$37K	—
33	SHUFRO ROSE & CO LLC	54,500	0.08%	$36K	—
34	Engineers Gate Manager LP	43,082	0.06%	$28K	-8,907 (-17.1%)
35	XTX Topco Ltd	42,391	0.06%	$28K	-21,075 (-33.2%)
36	R Squared Ltd	41,177	0.06%	$27K	+11,206 (+37.4%)
37	SG Americas Securities, LLC	39,492	0.06%	$26K	NEW
38	LRI Investments, LLC	37,000	0.06%	$24K	NEW
39	Net Worth Advisory Group	30,381	0.05%	$20K	-2,200 (-6.8%)
40	READYSTATE ASSET MANAGEMENT LP	30,000	0.04%	$20K	-1,353,838 (-97.8%)
41	KESTRA PRIVATE WEALTH SERVICES, LLC	29,000	0.04%	$19K	+13,000 (+81.3%)
42	Virtu Financial LLC	25,794	0.04%	$17K	+8,985 (+53.5%)
43	CITADEL ADVISORS LLC	23,705	0.04%	$16K	-141,634 (-85.7%)
44	PRICE T ROWE ASSOCIATES INC /MD/	23,005	0.03%	$16K	+5,346 (+30.3%)
45	Daytona Street Capital LLC	20,000	0.03%	$13K	—
46	OPPENHEIMER & CO INC	19,259	0.03%	$13K	-43,620 (-69.4%)
47	IMC-Chicago, LLC	18,432	0.03%	$12K	NEW
48	LPL Financial LLC	16,558	0.02%	$11K	—
49	GROUP ONE TRADING LLC	14,879	0.02%	$10K	NEW
50	Vanguard Global Advisers, LLC	14,847	0.02%	$10K	—
51	Point72 Asset Management, L.P.	12,867	0.02%	$8K	-8,831 (-40.7%)
52	JMN Financial LLC	10,841	0.02%	$7K	NEW
53	Joel Isaacson & Co., LLC	10,000	0.01%	$7K	—
54	Arax Advisory Partners	9,400	0.01%	$6K	+3 (+0.0%)
55	MORGAN STANLEY	8,255	0.01%	$5K	+1,565 (+23.4%)
56	NATIONAL BANK OF CANADA /FI/	5,700	0.01%	$4K	+2,500 (+78.1%)
57	WELLS FARGO & COMPANY/MN	2,612	0.00%	$2K	-1,054,178 (-99.8%)
58	Zurcher Kantonalbank (Zurich Cantonalbank)	2,549	0.00%	$2K	—
59	NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO	1,900	0.00%	$1K	—
60	TD Waterhouse Canada Inc.	1,700	0.00%	$1K	-6,900 (-80.2%)
61	OSAIC HOLDINGS, INC.	764	0.00%	$504	NEW
62	Olistico Wealth, LLC	755	0.00%	$498	—
63	BNP PARIBAS FINANCIAL MARKETS	447	0.00%	$295	—
64	SBI Securities Co., Ltd.	435	0.00%	$287	+24 (+5.8%)
65	Farther Finance Advisors, LLC	44	0.00%	$29	—
66	Intesa Sanpaolo S.p.A.	14	0.00%	$9	—
67	Caitong International Asset Management Co., Ltd	1	0.00%	$1	—

Exited since 2026-03-31 (16 filers; largest 16 shown)

AMERICAN CENTURY COMPANIES INC	−1,012,593
Solas Capital Management, LLC	−790,338
Graham Capital Management, L.P.	−135,587
GOLDMAN SACHS GROUP INC	−61,181
Assenagon Asset Management S.A.	−58,894
Susquehanna Portfolio Strategies, LLC	−48,961
Invesco Ltd.	−39,288
Beacon Pointe Advisors, LLC	−31,819
Centiva Capital, LP	−20,931
JPMORGAN CHASE & CO	−18,470
FMR LLC	−10,527
ROYAL BANK OF CANADA	−4,600
RHUMBLINE ADVISERS	−1,325
Transamerica Financial Advisors, LLC	−163
Advisory Services Network, LLC	−98
CWM, LLC	−23

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting person	Form	Filed	Event	Shares	% of class
WHITEBOX GENERAL PARTNER LLC	SCHEDULE 13G	2026-08-14	2026-08-07	3,590,350	5.4%
WHITEBOX ADVISORS LLC	SCHEDULE 13G	2026-08-14	2026-08-07	3,590,350	5.4%
Peter R. Kellogg	SCHEDULE 13D/A	2026-07-31	2021-01-19	26,950,672	40.25%
Charles K. Kellogg	SCHEDULE 13D/A	2026-07-31	2021-01-19	20,220,000	30.2%
Goose Creek Capital, Inc.	SCHEDULE 13D/A	2026-07-31	2021-01-19	18,220,000	27.2%
Harco National Insurance Company	SCHEDULE 13D/A	2026-07-31	2021-01-19	6,217,000	9.28%
IAT Insurance Group, Inc.	SCHEDULE 13D/A	2026-07-31	2021-01-19	6,217,000	9.28%
IAT Reinsurance Company Ltd.	SCHEDULE 13D/A	2026-07-31	2021-01-19	11,920,000	17.8%
Barclays PLC	SCHEDULE 13G	2026-05-14	2026-03-31	3,853,740	5.75%
Double Twins K, LLC	SCHEDULE 13G/A	2025-11-14	2025-09-30	4,648,133	6.9%
Redwood Capital Management Holdings, LP	SCHEDULE 13G/A	2025-11-14	2025-09-30	4,648,133	6.9%
REDWOOD CAPITAL MANAGEMENT LLC	SCHEDULE 13G/A	2025-11-14	2025-09-30	4,648,133	6.9%
Redwood Master Fund, Ltd.	SCHEDULE 13G/A	2025-11-14	2025-09-30	3,889,143	5.8%
Ruben Kliksberg	SCHEDULE 13G/A	2025-11-14	2025-09-30	4,648,133	6.9%
Peter Greatrex	SCHEDULE 13G/A	2025-11-07	2025-09-30	0	0%
Boundary Creek Advisors LP	SCHEDULE 13G/A	2025-11-07	2025-09-30	0	0%
Dimensional Fund Advisors LP	SCHEDULE 13G/A	2025-04-15	2025-03-31	3,214,709	4.8%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.