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Allspring Global Investments Holdings, LLC reported beneficial ownership of 1,161,421 shares of Innospec Inc. (IOSP) common stock, or 4.7%, as of September 30, 2026. It reported sole voting power over 1,160,597 shares and sole dispositive power over 1,161,421 shares; shared voting and dispositive power were each 0. The shares are held of record by clients of Allspring’s investment-adviser subsidiaries, who have rights to receive dividends or direct sale proceeds. No client was known to have those rights over more than 5% of the class.
Key Figures
Beneficial ownership:1,161,421 sharesOwnership of class:4.7%Sole voting power:1,160,597 shares+3 more
6 metrics
Beneficial ownership1,161,421 sharesAs of September 30, 2026
Ownership of class4.7%As of September 30, 2026
Sole voting power1,160,597 sharesAs of September 30, 2026
Sole dispositive power1,161,421 sharesAs of September 30, 2026
Shared voting power0 sharesAs of September 30, 2026
Shared dispositive power0 sharesAs of September 30, 2026
Key Terms
beneficially owned, Sole Voting Power, Sole Dispositive Power
3 terms
beneficially ownedfinancial
"Amount beneficially owned: 1,161,421"
Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.
Sole Voting Powerfinancial
"Sole Voting Power 1,160,597.00"
Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.
Sole Dispositive Powerfinancial
"Sole Dispositive Power 1,161,421.00"
Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
How many IOSP shares did Allspring report owning?
Allspring Global Investments Holdings, LLC reported beneficial ownership of 1,161,421 IOSP common shares, representing 4.7% of the class, as of September 30, 2026. It reported sole dispositive power over that number of shares.
How much voting power did Allspring report over IOSP shares?
Allspring reported sole voting power over 1,160,597 shares and shared voting power over 0 shares. It reported sole dispositive power over 1,161,421 shares and shared dispositive power over 0 shares.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 6)
Innospec Inc
(Name of Issuer)
Common Stock SH
(Title of Class of Securities)
45768S105
(CUSIP Number)
09/30/2026
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)
schemaVersion:
SCHEDULE 13G
CUSIP Number(s):
45768S105
1
Names of Reporting Persons
Allspring Global Investments Holdings, LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
1,160,597.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
1,161,421.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,161,421.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
4.7 %
12
Type of Reporting Person (See Instructions)
HC
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
Innospec Inc
(b)
Address of issuer's principal executive offices:
8310 SOUTH VALLEY HIGHWAY, SUITE 350, ENGLEWOOD, US-CO, 80112, US
Item 2.
(a)
Name of person filing:
Allspring Global Investments Holdings, LLC
(b)
Address or principal business office or, if none, residence:
1415 Vantage Park Drive, Charlotte, 28203, North Carolina, United States
(c)
Citizenship:
DELAWARE
(d)
Title of class of securities:
Common Stock SH
(e)
CUSIP No.:
45768S105
Item 3.
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
(k)
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.
Ownership
(a)
Amount beneficially owned:
1,161,421
(b)
Percent of class:
4.7 %
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
1,160,597
(ii) Shared power to vote or to direct the vote:
0
(iii) Sole power to dispose or to direct the disposition of:
1,161,421
(iv) Shared power to dispose or to direct the disposition of:
0
Item 5.
Ownership of 5 Percent or Less of a Class.
Ownership of 5 percent or less of a class
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.
The securities as to which this Schedule is filed are owned of record by clients of one or more investment Advisers identified in Exhibit A directly or indirectly owned by Allspring Global Investments Holdings, LLC. Those Clients have the right to receive, or the power to direct the receipt of, dividends from, or the proceeds for the sale of, such securities. No such client is known to have such right or power with respect to more than five percent of this class of securities, except as follows:
None
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary.
See Exhibit A
Item 8.
Identification and Classification of Members of the Group.
Not Applicable
Item 9.
Notice of Dissolution of Group.
Not Applicable
Item 10.
Certifications:
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
Allspring Global Investments Holdings, LLC
Signature:
Jennifer Grunberg
Name/Title:
Senior Compliance Manager
Date:
10/05/2026
Exhibit Information
Exhibit A
Subsidiary
Allspring Global Investments, LLC - IA
Allspring Funds Management, LLC - IA
*Entity beneficially owns 5% or greater of the outstanding shares of the security class being reported on
this schedule 13G
