SEC ownership of GRAFTECH INTERNATIONAL LTD

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000931148.

Comparable stake leader

Colonial House Capital Ltd

Disclosed value leader

WJS Investments Ltd

Comparable rows

35/50

Latest evidence

30 Jun 2026

Ownership snapshot CIK-linked ownership evidence from parsed SEC filings. 3 signals
Comparable ownership rows
35 of 50
Meaning: Rows with safely comparable ownership %
Latest 13D/G holder
Colonial House Capital Ltd
Source: Latest parsed Schedule 13D/G stake
Latest parsed ownership date
30 Jun 2026
Freshness: Most recent filing date in this holder set
Issuer Names, identifiers, and filing context for this profile. 2 identity fields
Issuer CIK
0000931148
Issuer location
Brooklyn Heights, OH

Ownership snapshot

Top shareholders of GRAFTECH INTERNATIONAL LTD (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
Colonial House Capital Ltd
Disclosed value leader
WJS Investments Ltd
Comparable rows
35/50
Latest evidence
30 Jun 2026
3/4/5 13D/G 13F Lead comparable stake: 13% 15 rows are not safely comparable across share classes. 13D/G row: Colonial House Capital Ltd Showing 1-8 of 50 holder rows.

Quick read

Colonial House Capital Ltd leads the comparable SEC ownership view at 13%.

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 Colonial House Capital Ltd's linked filing trail.
Comparable ownership Top 5
Colonial House Capital Ltd 13%
Graphite India Ltd 9.8%
HEG Ltd 9.4%
Nilesh Undavia 6.7%
MARATHON ASSET MANAGEMENT LP 4.7%

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
Colonial House Capital Ltd
3/4/5 13D/G
10%+ Owner · Colonial House Capital Limited
13%
from 13D/G
$53,986,038
31,358,061 shares
17 May 2024
Graphite India Ltd
13D/G
9.8%
$16,932,000
2,550,000 shares
+$5,245,447 13 Feb 2026
HEG Ltd
13D/G
9.4%
$14,586,009
24,310,015 shares
$0 31 Mar 2025
Nilesh Undavia
13D/G
6.7%
$10,385,365
17,308,942 shares
$0 10 Jan 2025
MARATHON ASSET MANAGEMENT LP
13D/G
Marathon Asset Management GP, L.L.C.
4.7%
$8,045,124
1,211,615 shares
$0 31 Mar 2026
Grantham, Mayo, Van Otterloo & Co. LLC
13D/G
4.4%
$6,756,624
11,261,040 shares
$0 31 Mar 2025
FMR LLC
13D/G
2.1%
$3,230,354
5,383,923 shares
-$18,279,094 28 Feb 2025
BlackRock, Inc.
13F 13D/G
Company
1.8%
from 13D/G
$7,590,107
1,284,282 shares
30 Jun 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 15 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 1-20 of 25 reporting-owner rows connected to GRAFTECH INTERNATIONAL LTD. Open a relationship link for the CIK-to-CIK filing trail.

Rows
25
Largest Forms 3/4/5 holder
WJS Investments Ltd
Net 12M change
$0
Latest report
30 Jun 2026
Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
WJS Investments Ltd 10%+ Owner $54,588,436 Mixed 11 Apr 2024
Colonial House Capital Ltd 10%+ Owner $53,986,038 Filing P/S 17 May 2024
BCP GP Ltd Former 10% Owner $51,376,217 Filing P/S 02 Jan 2024
Timothy K. Flanagan CEO and President, Director $1,065,644 Mixed 12 Mar 2026
Ortiz Inigo Perez SVP, Commercial and CTS $979,730 Mixed 12 Mar 2026
Jeremy S. Halford EVP, Chief Operating Officer $526,713 Mixed 12 Mar 2025
Rory F. O'Donnell Chief Financial Officer & SVP $494,520 Mixed 25 Feb 2026
Gina K. Gunning CLO & Corporate Secretary $420,299 Mixed 12 Mar 2024
Debra Fine Director $344,880 Mixed 07 May 2026
Anthony Richard Taccone Director $330,581 Mixed 31 Dec 2025
Jean-Marc Germain Director $328,347 Mixed 30 Jun 2026
Michel J. Dumas Director $297,121 Mixed 31 Dec 2025
Catherine L. Clegg Director $228,053 Mixed 29 Dec 2023
Catherine Hedoux-Delgado Interim CFO and Treasurer $213,363 Mixed 12 Mar 2024
Brian L. Acton Director $196,640 Mixed 31 Mar 2023
Andrew J. Renacci CLO and Corp. Secy. $185,300 Mixed 12 Mar 2026
Diego Donoso Director $149,829 Mixed 31 Mar 2025
Jeremy Joseph Clemens VP, Operations $139,043 Mixed 12 Mar 2026
Marcel Kessler Director $110,926 Mixed 09 Nov 2024
Quinn J. Coburn CFO, VP Finance & Treasurer $110,550 Mixed 27 May 2021

Recent insider transactions for GRAFTECH INTERNATIONAL LTD

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
Eric Roegner V EAF Deferred Share Units Award 39.8% 4,865 17,083 30 Jun 2026 Direct
Sachin M. Shivaram EAF Deferred Share Units Award 34.1% 4,865 19,140 30 Jun 2026 Direct
Jean-Marc Germain EAF Deferred Share Units Award 23.6% 5,076 26,537 30 Jun 2026 Direct
Jean-Marc Germain EAF Deferred Restricted Stock Units Award 50.6% 11,173 33,247 07 May 2026 Direct
Sachin M. Shivaram EAF Deferred Restricted Stock Units Award 81.7% 11,173 24,853 07 May 2026 Direct
Debra Fine EAF Deferred Restricted Stock Units Award 50.6% 11,173 33,247 07 May 2026 Direct
Eric Roegner V EAF Deferred Restricted Stock Units Award 96.9% 11,173 22,701 07 May 2026 Direct
Henry R. Keizer EAF Deferred Restricted Stock Units Award 56.8% 11,173 30,849 07 May 2026 Direct
Jean-Marc Germain EAF Deferred Share Units Award 26% 4,425 21,461 31 Mar 2026 Direct
Eric Roegner V EAF Deferred Share Units Award 53.2% 4,240 12,219 31 Mar 2026 Direct
Sachin M. Shivaram EAF Deferred Share Units Award 42.3% 4,240 14,276 31 Mar 2026 Direct
Ortiz Inigo Perez EAF Common Stock Options Exercise 28.1% 10,144 46,226 12 Mar 2026 Direct
Ortiz Inigo Perez EAF Restricted Stock Units Options Exercise -50% -10,144 10,144 12 Mar 2026 Direct
Andrew J. Renacci EAF Common Stock Tax liability -5.59% -526 8,891 12 Mar 2026 Direct
Andrew J. Renacci EAF Common Stock Options Exercise 23.6% 1,800 9,417 12 Mar 2026 Direct
Andrew J. Renacci EAF Restricted Stock Units Options Exercise -50% -1,800 1,800 12 Mar 2026 Direct
Jeremy Joseph Clemens EAF Common Stock Tax liability -11.2% -1,059 8,361 12 Mar 2026 Direct
Jeremy Joseph Clemens EAF Common Stock Options Exercise 46.4% 2,987 9,420 12 Mar 2026 Direct
Jeremy Joseph Clemens EAF Restricted Stock Units Options Exercise -50% -2,987 2,987 12 Mar 2026 Direct
Timothy K. Flanagan EAF Common Stock Tax liability -9.14% -4,525 44,963 12 Mar 2026 Direct
Timothy K. Flanagan EAF Common Stock Options Exercise 44.7% 15,284 49,488 12 Mar 2026 Direct
Timothy K. Flanagan EAF Restricted Stock Units Options Exercise -50% -15,284 15,284 12 Mar 2026 Direct
Andrew J. Renacci EAF Common Stock Tax liability -55% -2,622 2,145 25 Feb 2026 Direct
Andrew J. Renacci EAF Common Stock Options Exercise 506% 8,424 10,089 25 Feb 2026 Direct
Andrew J. Renacci EAF Restricted Stock Units Options Exercise -100% -8,425 0 25 Feb 2026 Direct
Timothy K. Flanagan EAF Common Stock Tax liability -23% -6,106 20,425 25 Feb 2026 Direct
Timothy K. Flanagan EAF Common Stock Options Exercise 109% 20,621 39,532 25 Feb 2026 Direct
Timothy K. Flanagan EAF Restricted Stock Units Options Exercise -100% -20,622 0 25 Feb 2026 Direct
Jeremy Joseph Clemens EAF Common Stock Tax liability -30.2% -1,569 3,631 25 Feb 2026 Direct
Jeremy Joseph Clemens EAF Common Stock Options Exercise 132.1% 4,422 7,769 25 Feb 2026 Direct
Jeremy Joseph Clemens EAF Restricted Stock Units Options Exercise -100% -4,423 0 25 Feb 2026 Direct
Ortiz Inigo Perez EAF Common Stock Options Exercise 68.7% 14,691 36,082 25 Feb 2026 Direct
Ortiz Inigo Perez EAF Restricted Stock Units Options Exercise -100% -14,692 0 25 Feb 2026 Direct
Rory F. O'Donnell EAF Common Stock Tax liability -12% -2,904 21,202 25 Feb 2026 Direct
Rory F. O'Donnell EAF Common Stock Options Exercise 68.6% 9,808 24,106 25 Feb 2026 Direct
Rory F. O'Donnell EAF Restricted Stock Units Options Exercise -33.3% -9,808 19,616 25 Feb 2026 Direct
Anthony Richard Taccone EAF Deferred Share Units Award 6.91% 1,451 22,430 31 Dec 2025 Direct
Michel J. Dumas EAF Deferred Share Units Award 6.04% 1,007 17,686 31 Dec 2025 Direct
Jean-Marc Germain EAF Deferred Share Units Award 11.6% 1,773 17,036 31 Dec 2025 Direct
Debra Fine EAF Deferred Share Units Award 4.79% 1,007 22,040 31 Dec 2025 Direct
Eric Roegner V EAF Deferred Share Units Award 30.3% 1,854 7,978 31 Dec 2025 Direct
Sachin M. Shivaram EAF Deferred Share Units Award 22.7% 1,854 10,035 31 Dec 2025 Direct
Michel J. Dumas EAF Deferred Share Units Award 7.88% 1,219 16,678 30 Sep 2025 Direct
Jean-Marc Germain EAF Deferred Share Units Award 16.4% 2,145 15,263 30 Sep 2025 Direct
Debra Fine EAF Deferred Share Units Award 6.15% 1,219 21,032 30 Sep 2025 Direct
Anthony R. Taccone EAF Deferred Share Units Award 9.13% 1,755 20,979 30 Sep 2025 Direct
Sachin M. Shivaram EAF Deferred Share Units Award 37.8% 2,243 8,182 30 Sep 2025 Direct
Eric Roegner V EAF Deferred Share Units Award 57.8% 2,243 6,125 30 Sep 2025 Direct
Rory F. O'Donnell EAF Common Stock Tax liability -11.6% -1,874 14,298 03 Sep 2025 Direct
Rory F. O'Donnell EAF Common Stock Options Exercise 61.7% 6,172 16,172 03 Sep 2025 Direct
* marks a reported price that did not pass the local price check.
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