Institutional Holders Report 5% Stakes in Tenable (TENB)

Rhea-AI Filing Summary

Ameriprise Financial, Inc. and Columbia Management Investment Advisers, LLC filed Schedule 13G disclosures reporting significant holdings of Tenable Holdings common stock. Ameriprise reports an aggregate beneficial ownership of 6,466,182 shares (5.3%) with shared voting power of 6,058,433 and shared dispositive power of 6,466,182. Columbia Management reports 6,221,404 shares (5.1%) with shared voting power of 6,058,433 and shared dispositive power of 6,221,404.

The filing notes that AFI is the parent of CMIA and that AFI’s reported total includes CMIA’s shares, while both AFI and CMIA disclaim beneficial ownership of the shares reported by the other. Both reporting persons certify the securities are held in the ordinary course of business and not for the purpose of changing or influencing control.

Positive

• Institutional ownership disclosed: Ameriprise reports 6,466,182 shares (5.3%); Columbia Management reports 6,221,404 shares (5.1%).
• Passive intent certified: Both filers state the securities are held in the ordinary course of business and not to change or influence control.

Negative

• None.

Insights

Financial Analyst

TL;DR Institutional holders reported passive stakes just above 5%, indicating notable passive ownership without an intent to exert control.

Ameriprise and Columbia Management each report ownership above the 5% threshold, which can affect float and concentration. The filings show shared voting and dispositive power rather than sole control, and both sign certifications that holdings are passive. For investors, this is a factual update on ownership concentration; it does not signal an active proxy or control campaign based on the statements in the filing.

Corporate Governance Expert

TL;DR Schedule 13G filings and explicit certifications indicate passive institutional holdings, with AFI noting a parent/subsidiary reporting relationship.

The filing clarifies the relationship between AFI and CMIA: AFI includes CMIA’s reported shares in its aggregate figure but disclaims direct beneficial ownership. The document records shared voting arrangements and standard certifications that the stakes are held in the ordinary course of business and not to influence control, consistent with a passive institutional investor disclosure.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Tenable Holdings, Inc

(Name of Issuer)

Common Stock

(Title of Class of Securities)

88025T102

(CUSIP Number)

06/30/2025

(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)

SCHEDULE 13G

CUSIP No. 88025T102

1

Names of Reporting Persons

Ameriprise Financial, Inc.

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 0.00
6	Shared Voting Power 6,058,433.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 6,466,182.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

6,466,182.00

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)

5.3 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP No. 88025T102

1

Names of Reporting Persons

Columbia Management Investment Advisers, 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

MINNESOTA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 6,058,433.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 6,221,404.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

6,221,404.00

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)

5.1 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Tenable Holdings, Inc
(b)	Address of issuer's principal executive offices: 6100 Merriweather Drive, Columbia, MD 21044
Item 2.
(a)	Name of person filing: (a) Ameriprise Financial, Inc. ("AFI") (b) Columbia Management Investment Advisers, LLC ("CMIA")
(b)	Address or principal business office or, if none, residence: (a) 145 Ameriprise Financial Center, Minneapolis, MN 55474 (b) 290 Congress Street, Boston, MA 02210
(c)	Citizenship: (a) Delaware (b) Minnesota
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 88025T102
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: Incorporated by reference to Items (5)-(9) and (11) of the cover page pertaining to each reporting person. AFI, as the parent company of CMIA, may be deemed to beneficially own the shares reported herein by CMIA. Accordingly, the shares reported herein by AFI include those shares separately reported herein by CMIA. Each of AFI and CMIA disclaims beneficial ownership of any shares reported on this Schedule.
(b)	Percent of class: The information required by Item 4(b) is set forth in Rows (5)-(9) and (11) of the cover page for each Reporting Person hereto and is incorporated herein by reference for each Reporting Person.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: The information required by Item 4(c) is set forth in Rows (5)-(9) and (11) of the cover page for each Reporting Person hereto and is incorporated herein by reference for each Reporting Person.
	(ii) Shared power to vote or to direct the vote: The information required by Item 4(c) is set forth in Rows (5)-(9) and (11) of the cover page for each Reporting Person hereto and is incorporated herein by reference for each Reporting Person.
	(iii) Sole power to dispose or to direct the disposition of: The information required by Item 4(c) is set forth in Rows (5)-(9) and (11) of the cover page for each Reporting Person hereto and is incorporated herein by reference for each Reporting Person.
	(iv) Shared power to dispose or to direct the disposition of: The information required by Item 4(c) is set forth in Rows (5)-(9) and (11) of the cover page for each Reporting Person hereto and is incorporated herein by reference for each Reporting Person.
Item 5.	Ownership of 5 Percent or Less of a Class.
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
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. AFI: See Exhibit I
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.

Ameriprise Financial, Inc.

Signature:	/s/ Michael G. Clarke
Name/Title:	Michael G. Clarke, Senior Vice President, North America Head of Operations & Investor Services
Date:	08/14/2025

Columbia Management Investment Advisers, LLC

Signature:	/s/ Michael G. Clarke
Name/Title:	Michael G. Clarke, Senior Vice President, North America Head of Operations & Investor Services
Date:	08/14/2025

Comments accompanying signature: Contact Information Charles Chiesa VP Fund Treasurer Global Operations and Investor Services Telephone: 617-385-9593 Exhibit Index Exhibit I Identification and Classification of the Subsidiary which Acquired the Security Being Reported on by the Parent Holding Company. Exhibit II Joint Filing Agreement

FAQ

How many Tenable (TENB) shares does Ameriprise report owning?

Ameriprise reports aggregate beneficial ownership of 6,466,182 shares, representing 5.3% of the class, with shared voting power of 6,058,433.

What stake in TENB does Columbia Management report?

Columbia Management reports 6,221,404 shares, representing 5.1% of the class, with shared voting power of 6,058,433.

Do Ameriprise or Columbia claim control of Tenable?

No. Both filers include certifications that the holdings are held in the ordinary course of business and were not acquired to change or influence control.

Why does Ameriprise report more shares than Columbia if CMIA is its subsidiary?

The filing states AFI, as parent of CMIA, may be deemed to beneficially own shares reported by CMIA and that AFI’s reported total includes those shares; AFI and CMIA disclaim beneficial ownership of each other’s reported shares.

What voting/dispositive powers are reported for these holdings?

Both filers report 0 sole voting and dispositive power and shared voting power of 6,058,433; shared dispositive power is 6,466,182 for Ameriprise and 6,221,404 for Columbia.