Vault-13

INNOSPEC INC IOSP

COM · Common Stock · CUSIP 45768S105

193 institutional holders
24,152,86924.2m shares reported held*
97.5% of all shares outstanding*
$2.1bnreported value*

* 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 ($7.2m this quarter). Holder counts are more reliable. Shares outstanding: 24.8m as of 2022-11-02, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $85.68. Options: 2 managers hold calls ($86.0k notional), 2 hold puts ($188.0k).

Biggest calls

Biggest puts

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

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
BlackRock, Inc. 13G · institution filed 2025-04-30 14.7% 3.7m≈ $299.7m 2025-04-30
VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 7.5% new 1.9m≈ $152.2m 2026-04-29
DIMENSIONAL FUND ADVISORS LP 13G · institution new · filed 2026-07-14 5.3% new 1.3m≈ $106.2m 2026-07-14
VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 5.2% new 1.3m≈ $105.8m 2026-04-30

Fell to 5% or below in the last year: Allspring Global Investments Holdings, LLC (4.7%, 2026-10-07), VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC)

Insider purchases and sales in Q3 2022

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
10010Q4 20: 0 buyingQ4 20: 0 sellingQ1 21: 0 buyingQ1 21: 0 sellingQ1 21Q2 21: 0 buyingQ2 21: 0 sellingQ3 21: 0 buyingQ3 21: 0 sellingQ3 21Q4 21: 0 buyingQ4 21: 3 sellingQ1 22: 0 buyingQ1 22: 6 sellingQ1 22Q2 22: 0 buyingQ2 22: 0 sellingQ3 22: 0 buyingQ3 22: 0 sellingQ3 22
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20200—0——
Q1 20210—0——
Q2 20210—0——
Q3 20210—0——
Q4 20210—3$1.2m—
Q1 20220—6$1.6m—
Q2 20220—0——
Q3 20220—0——

None reported in Q3 2022.

Holders, Q3 2022

#ManagerLocationShares Value% of their portfolioChangeShares change
1 BlackRock Inc. 0.01% of their portfolio New York, NY 3,947,5993.9m $338.2m $338.2m 0.01% —
2 VANGUARD GROUP INC 0.01% of their portfolio Valley Forge, PA 2,846,3622.8m $243.8m $243.8m 0.01% —
3 Allspring Global Investments Holdings, LLC 0.37% of their portfolio CHARLOTTE, NC 2,409,0002.4m $206.4m $206.4m 0.37% —
4 WASATCH ADVISORS LP 0.95% of their portfolio SALT LAKE CITY, UT 1,596,5291.6m $136.8m $136.8m 0.95% —
5 DIMENSIONAL FUND ADVISORS LP 0.04% of their portfolio AUSTIN, TX 1,197,2121.2m $102.6m $102.6m 0.04% —
6 ROYCE & ASSOCIATES LP 1.01% of their portfolio New York, NY 1,047,6881.0m $89.8m $89.8m 1.01% —
7 JANUS HENDERSON GROUP PLC 0.03% of their portfolio LONDON, X0 1,015,1361.0m $87.0m $87.0m 0.03% —
8 VICTORY CAPITAL MANAGEMENT INC 0.10% of their portfolio San Antonio, TX 973,752973.8k $83.4m $83.4m 0.10% —
9 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 910,972911.0k $78.0m $78.0m 0.00% —
10 Champlain Investment Partners, LLC 0.53% of their portfolio BURLINGTON, VT 904,940904.9k $77.5m $77.5m 0.53% —
11 ALLIANCEBERNSTEIN L.P. 0.04% of their portfolio NASHVILLE, TN 858,179858.2k $73.5m $73.5m 0.04% —
12 GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio BOSTON, MA 446,397446.4k $38.2m $38.2m 0.01% —
13 NORTHERN TRUST CORP 0.01% of their portfolio CHICAGO, IL 397,167397.2k $34.0m $34.0m 0.01% —
14 Nuveen Asset Management, LLC 0.01% of their portfolio CHICAGO, IL 332,817332.8k $28.5m $28.5m 0.01% —
15 WESTWOOD HOLDINGS GROUP INC 0.31% of their portfolio DALLAS, TX 308,125308.1k $26.4m $26.4m 0.31% —
16 VOYA INVESTMENT MANAGEMENT LLC 0.03% of their portfolio ATLANTA, GA 299,588299.6k $25.7m $25.7m 0.03% —
17 Bank of New York Mellon Corp 0.01% of their portfolio NEW YORK, NY 293,694293.7k $25.2m $25.2m 0.01% —
18 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio SAN FRANCISCO, CA 282,172282.2k $24.2m $24.2m 0.01% —
19 EAGLE ASSET MANAGEMENT INC 0.12% of their portfolio ST PETERSBURG, FL 219,167219.2k $18.8m $18.8m 0.12% —
20 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 217,908217.9k $18.7m $18.7m 0.00% —
21 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 213,722213.7k $18.3m $18.3m 0.00% —
22 Telemark Asset Management, LLC 2.82% of their portfolio BOSTON, MA 210,000210.0k $18.0m $18.0m 2.82% —
23 NORGES BANK 0.00% of their portfolio OSLO, Q8 196,396196.4k $16.8m $16.8m 0.00% —
24 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 171,163171.2k $14.7m $14.7m 0.00% —
25 PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio DES MOINES, IA 153,794153.8k $13.2m $13.2m 0.01% —
26 Huber Capital Management LLC 3.00% of their portfolio EL SEGUNDO, CA 125,026125.0k $10.7m $10.7m 3.00% —
27 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 107,992108.0k $9.3m $9.3m 0.00% —
28 Leeward Investments, LLC - MA 0.41% of their portfolio BOSTON, MA 100,766100.8k $8.6m $8.6m 0.41% —
29 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 98,12398.1k $8.4m $8.4m 0.00% —
30 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 97,29697.3k $8.3m $8.3m 0.00% —
31 KENNEDY CAPITAL MANAGEMENT LLC 0.25% of their portfolio ST LOUIS, MO 97,28797.3k $8.3m $8.3m 0.25% —
32 Thrivent Financial for Lutherans 0.02% of their portfolio Minneapolis, MN 94,85694.9k $8.1m $8.1m 0.02% —
33 KIRR MARBACH & CO LLC /IN/ 2.36% of their portfolio COLUMBUS, IN 81,29581.3k $7.0m $7.0m 2.36% —
34 SEI INVESTMENTS CO 0.01% of their portfolio OAKS, PA 75,21675.2k $6.4m $6.4m 0.01% —
35 RHUMBLINE ADVISERS 0.01% of their portfolio BOSTON, MA 74,45874.5k $6.4m $6.4m 0.01% —
36 Legal & General Group Plc 0.00% of their portfolio London, X0 72,59972.6k $6.2m $6.2m 0.00% —
37 RAYMOND JAMES & ASSOCIATES 0.01% of their portfolio ST PETERSBURG, FL 72,44872.4k $6.2m $6.2m 0.01% —
38 SEGALL BRYANT & HAMILL, LLC 0.07% of their portfolio CHICAGO, IL 69,10269.1k $5.9m $5.9m 0.07% —
39 OSTERWEIS CAPITAL MANAGEMENT INC 0.44% of their portfolio SAN FRANCISCO, CA 67,98568.0k $5.8m $5.8m 0.44% —
40 BESSEMER GROUP INC 0.01% of their portfolio WOODBRIDGE, NJ 59,90359.9k $5.1m $5.1m 0.01% —
41 Swiss National Bank 0.00% of their portfolio ZURICH, V8 58,80358.8k $5.0m $5.0m 0.00% —
42 MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC 0.06% of their portfolio New York, NY 56,13556.1k $4.8m $4.8m 0.06% —
43 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 52,90152.9k $4.5m $4.5m 0.00% —
44 HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC 0.02% of their portfolio Los Angeles, CA 49,27049.3k $4.2m $4.2m 0.02% —
45 Public Sector Pension Investment Board 0.03% of their portfolio MONTREAL, A8 45,44345.4k $3.9m $3.9m 0.03% —
46 ZWJ INVESTMENT COUNSEL INC 0.22% of their portfolio Atlanta, GA 41,54941.5k $3.6m $3.6m 0.22% —
47 CREDIT SUISSE AG/ 0.00% of their portfolio ZURICH, V8 35,65835.7k $3.1m $3.1m 0.00% —
48 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio NEW YORK, NY 32,81332.8k $2.8m $2.8m 0.00% —
49 CONNORS INVESTOR SERVICES INC 0.35% of their portfolio WYOMISSING, PA 31,39431.4k $2.7m $2.7m 0.35% —
50 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 31,13231.1k $2.7m $2.7m 0.00% —
51 TOCQUEVILLE ASSET MANAGEMENT L.P. 0.05% of their portfolio New York, NY 31,09031.1k $2.7m $2.7m 0.05% —
52 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 30,90030.9k $2.6m $2.6m 0.00% —
53 CANADA LIFE ASSURANCE Co 0.01% of their portfolio WINNIPEG, A2 30,24430.2k $2.6m $2.6m 0.01% —
54 ALGERT GLOBAL LLC 0.14% of their portfolio SAN FRANCISCO, CA 27,30027.3k $2.3m $2.3m 0.14% —
55 ACADIAN ASSET MANAGEMENT LLC 0.01% of their portfolio Boston, MA 27,00127.0k $2.3m $2.3m 0.01% —
56 TUDOR INVESTMENT CORP ET AL 0.05% of their portfolio STAMFORD, CT 25,99226.0k $2.2m $2.2m 0.05% —
57 PRUDENTIAL FINANCIAL INC 0.00% of their portfolio NEWARK, NJ 25,09325.1k $2.1m $2.1m 0.00% —
58 State of New Jersey Common Pension Fund D 0.01% of their portfolio TRENTON, NJ 24,27024.3k $2.1m $2.1m 0.01% —
59 Round Hill Asset Management 1.32% of their portfolio PASADENA, CA 22,60222.6k $1.9m $1.9m 1.32% —
60 COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.02% of their portfolio HARRISBURG, PA 22,58822.6k $1.9m $1.9m 0.02% —
61 B. Metzler seel. Sohn & Co. AG 0.04% of their portfolio FRANKFURT, 2M 22,58822.6k $1.9m $1.9m 0.04% —
62 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 21,13421.1k $1.8m $1.8m 0.00% —
63 YOUSIF CAPITAL MANAGEMENT, LLC 0.02% of their portfolio BLOOMFIELD HILLS, MI 20,03220.0k $1.7m $1.7m 0.02% —
64 PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 0.01% of their portfolio COLUMBUS, OH 19,64119.6k $1.7m $1.7m 0.01% —
65 COMERICA BANK 0.02% of their portfolio DALLAS, TX 18,96219.0k $1.8m $1.8m 0.02% —
66 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 18,60018.6k $1.6m $1.6m 0.00% —
67 TEXAS PERMANENT SCHOOL FUND CORP 0.02% of their portfolio AUSTIN, TX 17,83317.8k $1.5m $1.5m 0.02% —
68 State of Tennessee, Department of Treasury 0.01% of their portfolio NASHVILLE, TN 17,22517.2k $1.5m $1.5m 0.01% —
69 State of Alaska, Department of Revenue 0.02% of their portfolio JUNEAU, AK 17,16417.2k $1.5m $1.5m 0.02% —
70 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 16,40116.4k $1.4m $1.4m 0.00% —
71 VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.01% of their portfolio JUPITER, FL 15,00815.0k $1.3m $1.3m 0.01% —
72 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 14,17114.2k $1.2m $1.2m 0.00% —
73 NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio ALBANY, NY 13,92513.9k $1.2m $1.2m 0.00% —
74 AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio Greenwich, CT 13,62613.6k $1.2m $1.2m 0.00% —
75 FMR LLC 0.00% of their portfolio BOSTON, MA 13,61413.6k $1.2m $1.2m 0.00% —
76 FIRST TRUST ADVISORS LP 0.00% of their portfolio Wheaton, IL 13,60213.6k $1.2m $1.2m 0.00% —
77 AMERICAN INTERNATIONAL GROUP, INC. 0.01% of their portfolio New York, NY 13,56613.6k $1.2m $1.2m 0.01% —
78 OPPENHEIMER ASSET MANAGEMENT INC. 0.02% of their portfolio NEW YORK, NY 13,55813.6k $1.2m $1.2m 0.02% —
79 MetLife Investment Management, LLC 0.01% of their portfolio Whippany, NJ 13,16113.2k $1.1m $1.1m 0.01% —
80 MARTINGALE ASSET MANAGEMENT L P 0.02% of their portfolio BOSTON, MA 13,10213.1k $1.1m $1.1m 0.02% —
81 PUTNAM INVESTMENTS LLC 0.00% of their portfolio BOSTON, MA 12,91212.9k $1.1m $1.1m 0.00% —
82 TEACHER RETIREMENT SYSTEM OF TEXAS 0.01% of their portfolio AUSTIN, TX 12,83012.8k $1.1m $1.1m 0.01% —
83 Grantham, Mayo, Van Otterloo & Co. LLC 0.01% of their portfolio Boston, MA 12,60012.6k $1.1m $1.1m 0.01% —
84 AMALGAMATED BANK 0.01% of their portfolio NEW YORK, NY 11,90711.9k $1.0m $1.0m 0.01% —
85 Louisiana State Employees Retirement System 0.03% of their portfolio BATON ROUGE, LA 11,80011.8k $1.0m $1.0m 0.03% —
86 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 11,75611.8k $1.0m $1.0m 0.00% —
87 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 11,38411.4k $975.0k $975.0k 0.00% —
88 STRS OHIO 0.00% of their portfolio COLUMBUS, OH 11,30011.3k $968.0k $968.0k 0.00% —
89 TWO SIGMA ADVISERS, LP 0.00% of their portfolio NEW YORK, NY 11,20011.2k $960.0k $960.0k 0.00% —
90 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 10,88410.9k $932.0k $932.0k 0.00% —
91 PANAGORA ASSET MANAGEMENT INC 0.01% of their portfolio BOSTON, MA 10,65210.7k $913.0k $913.0k 0.01% —
92 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 10,51510.5k $900.8k $900.8k 0.00% —
93 Mirae Asset Global Investments Co., Ltd. 0.00% of their portfolio SEOUL, M5 10,49010.5k $899.0k $899.0k 0.00% —
94 FIRST HAWAIIAN BANK 0.03% of their portfolio HONOLULU, HI 9,96610.0k $854.0k $854.0k 0.03% —
95 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 9,5919.6k $821.7k $821.7k 0.00% —
96 JAMES INVESTMENT RESEARCH, INC. 0.12% of their portfolio ALPHA, OH 9,4689.5k $811.0k $811.0k 0.12% —
97 Federation des caisses Desjardins du Quebec 0.01% of their portfolio LEVIS, A8 8,7108.7k $746.2k $746.2k 0.01% —
98 LOS ANGELES CAPITAL MANAGEMENT LLC 0.00% of their portfolio LOS ANGELES, CA 8,6168.6k $738.0k $738.0k 0.00% —
99 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 8,4968.5k $728.0k $728.0k 0.00% —
100 DIVERSIFIED TRUST CO 0.03% of their portfolio MEMPHIS, TN 8,4658.5k $725.0k $725.0k 0.03% —