SEC ownership of OLIN Corp

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000074303.

Comparable stake leader

HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC

Disclosed value leader

HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC

Comparable rows

50/50

Latest evidence

31 Mar 2026

Ownership snapshot CIK-linked ownership evidence from parsed SEC filings. 2 signals
Latest 13D/G holder
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC
Latest parsed ownership date
31 Mar 2026
Issuer Names, identifiers, and filing context for this profile. 2 identity fields
Issuer CIK
0000074303
Issuer location
Clayton, MO

Ownership snapshot

Top shareholders of OLIN Corp (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
HOTCHKIS & WILEY CAPITAL ...
Disclosed value leader
HOTCHKIS & WILEY CAPITAL ...
Comparable rows
50/50
Latest evidence
31 Mar 2026
13F 13D/G Lead comparable stake: 13% 13D/G row: HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC Showing 1-8 of 50 holder rows.

Quick read

HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC leads the comparable SEC ownership view at 13%.

50 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 HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC's linked filing trail.
Comparable ownership Top 5
HOTCHKIS & WILEY CAPITAL MANAGEME... 13%
BlackRock, Inc. 9.1%
VANGUARD CAPITAL MANAGEMENT LLC 5.2%
FULLER & THALER ASSET MANAGEMENT,... 4.4%
FMR LLC 2.9%

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
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC
13F 13D/G
Company · Hotchkis and Wiley Capital Management, LLC
13%
from 13D/G
$448,453,980
15,084,224 shares
31 Mar 2026
BlackRock, Inc.
13F 13D/G
Company
9.1%
from 13D/G
$341,504,237
11,486,856 shares
31 Mar 2026
VANGUARD CAPITAL MANAGEMENT LLC
13D/G 13F
Vanguard Capital Management · Company
5.2%
$175,225,736
5,893,903 shares
$0 31 Mar 2026
FULLER & THALER ASSET MANAGEMENT, INC.
13F 13D/G
Company
4.4%
from 13D/G
$149,122,021
5,015,877 shares
31 Mar 2026
FMR LLC
13D/G 13F
Company
2.9%
$74,212,462
3,373,294 shares
$0 31 Dec 2024
DIMENSIONAL FUND ADVISORS LP
13F
Company
13F
4.9%
$167,311,250
5,627,997 shares
31 Mar 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
13F
Company
13F
4.8%
$161,713,570
5,439,407 shares
31 Mar 2026
STATE STREET CORP
13F
Company
13F
4.2%
$142,704,535
4,800,018 shares
31 Mar 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

Net insider flow leans to selling over the last 12 months. Net value: -$2,239,226.

Buys
$373,956
Insiders: 1
Sells
$2,613,182
Insiders: 5
Net
-$2,239,226
Shares: -96,379
Window
Last 12 months
4 rolling buckets
Buy value Sell value
Shares: 20,000 Shares: 116,379
Window (months) Buy shares Sell shares Buy value Sell value Net value
0-3 0 0 $0 $0 $0
3-6 0 105,879 $0 $2,392,690 -$2,392,690
6-9 0 4,500 $0 $93,850 -$93,850
9-12 20,000 6,000 $373,956 $126,642 +$247,314

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-20 of 28 reporting-owner rows connected to OLIN Corp. Open a relationship link for the CIK-to-CIK filing trail.

Rows
28
Largest Forms 3/4/5 holder
Scott D. Ferguson
Net 12M change
-$2,239,226
Latest report
01 Jun 2026
Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
Scott D. Ferguson Director $577,185,457 Filing P/S 23 May 2022
Pat D. Dawson Evp $5,692,391 Mixed 22 Feb 2022
Kenneth Todd Lane President & CEO, Director $5,445,829 Mixed 18 Mar 2026
Scott McDougald Sutton President & CEO, Director $4,712,360 Filing P/S 26 Feb 2024
Todd A. Slater Vp & Cfo $4,644,213 -$2,073,918 -31% Mixed 20 Feb 2026
James A. Varilek Evp & Coo $3,475,563 Mixed 18 Nov 2022
Brett A. Flaugher VP & Pres, Winchester $2,728,048 Mixed 20 Feb 2026
Damian Gumpel VP Corp Strategy $2,479,326 Mixed 22 Feb 2024
C. Robert Bunch Director $2,406,166 Mixed 01 May 2024
Gray G. Benoist Director $2,306,042 Mixed 10 Sep 2021
Carol A. Williams Director $1,301,279 Mixed 01 May 2026
R. Nichole Sumner VP & Controller $1,174,729 -$106,846 -8.3% Mixed 20 Feb 2026
Earl L. Shipp Director $1,135,687 Mixed 01 May 2026
Dana C. O'Brien SVP, Chief Legal Officer $1,069,412 Mixed 19 Feb 2025
William H. Weideman Director $1,015,222 Mixed 01 May 2026
Valerie A. Peters Vp, Hr $966,202 Mixed 21 Feb 2024
Beverley A. Babcock Director $898,528 Mixed 01 May 2026
Teresa M. Vermillion VP & Treasurer $821,549 -$220,492 -21% Mixed 20 Feb 2026
Marc Ehrhardt VP & Pres Corp Development $767,896 +$373,956 +95% Median 01 May 2026
Florian J. Kohl VP & Pres,Epoxy&International $744,322 Mixed 01 Jun 2026

Recent insider transactions for OLIN Corp

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
Florian J. Kohl OLN Common Stock Tax liability -5.83% -492 7,949 01 Jun 2026 Direct
Florian J. Kohl OLN Common Stock Options Exercise 17.4% 1,250 8,441 01 Jun 2026 Direct
Florian J. Kohl OLN Restricted Stock Units Options Exercise -33.3% -1,250 2,500 01 Jun 2026 Direct
Florian J. Kohl OLN Common Stock Tax liability -10.2% -819 7,191 15 May 2026 Direct
Florian J. Kohl OLN Common Stock Options Exercise 45.4% 2,500 8,010 15 May 2026 Direct
Florian J. Kohl OLN Restricted Stock Units Options Exercise -100% -2,500 0 15 May 2026 Direct
Julie A. Piggott OLN Phantom Stock Units Award 48.5% 7,023 21,495 01 May 2026 Direct
Edward Daly OLN Phantom Stock Units Award 72.8% 7,023 16,672 01 May 2026 Direct
Earl L. Shipp OLN Phantom Stock Units Award 13.5% 7,023 59,191 01 May 2026 Direct
Carol A. Williams OLN Phantom Stock Units Award 13.6% 7,023 58,850 01 May 2026 Direct
Matthew S. Darnall OLN Phantom Stock Units Award 32.7% 10,535 42,722 01 May 2026 Direct
Beverley A. Babcock OLN Common Stock $1 par value Award 59.9% 2,107 5,625 01 May 2026 Direct
Beverley A. Babcock OLN Phantom Stock Units Award 14.6% 4,916 38,508 01 May 2026 Direct
William H. Weideman OLN Phantom Stock Units Award 15.1% 7,023 53,657 01 May 2026 Direct
Marc Ehrhardt OLN Common Stock Tax liability -6.77% -1,877 25,829 01 May 2026 Direct
Marc Ehrhardt OLN Common Stock Options Exercise 38.5% 7,706 27,706 01 May 2026 Direct
Marc Ehrhardt OLN Restricted Stock Units Options Exercise -50.7% -7,706 7,500 01 May 2026 Direct
Kenneth Todd Lane OLN Common Stock Tax liability -16.4% -19,675 100,287 18 Mar 2026 Direct
Kenneth Todd Lane OLN Common Stock Options Exercise 71.5% 50,000 119,962 18 Mar 2026 Direct
Kenneth Todd Lane OLN Restricted Stock Units Options Exercise -33.3% -50,000 100,000 18 Mar 2026 Direct
Deon Carter OLN Common Stock Sale -94.8% $154,226 $23.73 -6,500 357 25 Feb 2026 Direct
Angela M. Castle OLN Common Stock Sale -60.9% $57,700 $24.25 -2,379 1,528 24 Feb 2026 Direct
Angela M. Castle OLN Common Stock Tax liability -20.4% -1,003 3,907 20 Feb 2026 Direct
Angela M. Castle OLN Common Stock Options Exercise 220.9% 3,380 4,910 20 Feb 2026 Direct
Angela M. Castle OLN Restricted Stock Units Options Exercise -33.3% -3,380 6,758 20 Feb 2026 Direct
Teresa M. Vermillion OLN Common Stock Tax liability -3.44% -674 18,922 20 Feb 2026 Direct
Teresa M. Vermillion OLN Common Stock Options Exercise 13.4% 2,318 19,596 20 Feb 2026 Direct
Teresa M. Vermillion OLN Restricted Stock Units Options Exercise -33.3% -2,318 4,634 20 Feb 2026 Direct
R. Nichole Sumner OLN Common Stock Tax liability -2.02% -538 26,147 20 Feb 2026 Direct
R. Nichole Sumner OLN Common Stock Options Exercise 7.38% 1,835 26,685 20 Feb 2026 Direct
R. Nichole Sumner OLN Restricted Stock Units Options Exercise -33.3% -1,835 3,669 20 Feb 2026 Direct
Todd A. Slater OLN Common Stock Tax liability -7.21% -3,850 49,543 20 Feb 2026 Direct
Todd A. Slater OLN Common Stock Options Exercise 19.4% 8,690 53,393 20 Feb 2026 Direct
Todd A. Slater OLN Restricted Stock Units Options Exercise -33.3% -8,690 17,379 20 Feb 2026 Direct
Kenneth Todd Lane OLN Common Stock Tax liability -11.2% -8,811 69,962 20 Feb 2026 Direct
Kenneth Todd Lane OLN Common Stock Options Exercise 85.1% 36,206 78,773 20 Feb 2026 Direct
Kenneth Todd Lane OLN Restricted Stock Units Options Exercise -32.7% -36,206 74,411 20 Feb 2026 Direct
Florian J. Kohl OLN Common Stock Tax liability -21.1% -1,470 5,510 20 Feb 2026 Direct
Florian J. Kohl OLN Common Stock Options Exercise 638.6% 6,035 6,980 20 Feb 2026 Direct
Florian J. Kohl OLN Restricted Stock Units Options Exercise -33.3% -6,035 12,068 20 Feb 2026 Direct
Deon Carter OLN Common Stock Tax liability -20.7% -1,793 6,857 20 Feb 2026 Direct
Deon Carter OLN Common Stock Options Exercise 357.4% 6,759 8,650 20 Feb 2026 Direct
Deon Carter OLN Restricted Stock Units Options Exercise -33.3% -6,759 13,517 20 Feb 2026 Direct
Brett A. Flaugher OLN Common Stock Tax liability -28.2% -1,839 4,674 20 Feb 2026 Direct
Brett A. Flaugher OLN Common Stock Options Exercise 2648.1% 6,276 6,513 20 Feb 2026 Direct
Brett A. Flaugher OLN Restricted Stock Units Options Exercise -33.3% -6,276 12,552 20 Feb 2026 Direct
Kenneth Todd Lane OLN Restricted Stock Units Award 132,053 132,053 18 Feb 2026 Direct
Brett A. Flaugher OLN Common Stock Award 237 237 18 Feb 2026 Direct
Brett A. Flaugher OLN Restricted Stock Units Award 24,010 24,010 18 Feb 2026 Direct
Florian J. Kohl OLN Restricted Stock Units Award 20,009 20,009 18 Feb 2026 Direct
* marks a reported price that did not pass the local price check.
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