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ZoomInfo Technologies Inc. (GTM) ownership amendment reports beneficial ownership for Henry Schuck, DO Holdings (WA), LLC, and Kirk Norman Brown. Schuck reported 27,451,689 shares (9.4%); DO Holdings reported 13,377,329 shares (4.6%); and Brown reported 20,993,243 shares (7.2%). The percentages use 291,110,046 ZoomInfo shares outstanding as of July 31, 2026.
DO Holdings’ 13,377,329 shares are reported as shared voting and dispositive power by the company and both individuals, so the reported totals overlap. Schuck’s reported amount includes 13,787 shares issuable upon restricted stock unit vesting within 60 days of September 30, 2026. The reporting persons’ share totals exclude securities owned by other parties to the Stockholders Agreement and Irrevocable Proxy; each disclaims beneficial ownership of those securities.
Key Figures
Beneficial ownership — Henry Schuck:27,451,689 shares (9.4%)Beneficial ownership — DO Holdings (WA), LLC:13,377,329 shares (4.6%)Beneficial ownership — Kirk Norman Brown:20,993,243 shares (7.2%)+2 more
5 metrics
Beneficial ownership — Henry Schuck27,451,689 shares (9.4%)Reported percentage uses 291,110,046 shares outstanding as of July 31, 2026.
Beneficial ownership — DO Holdings (WA), LLC13,377,329 shares (4.6%)Reported percentage uses 291,110,046 shares outstanding as of July 31, 2026.
Beneficial ownership — Kirk Norman Brown20,993,243 shares (7.2%)Reported percentage uses 291,110,046 shares outstanding as of July 31, 2026.
ZoomInfo shares outstanding291,110,046 sharesAs of July 31, 2026; used to calculate the reported ownership percentages.
Shares issuable upon restricted stock unit vesting13,787 sharesIncluded in Henry Schuck’s reported power; issuable upon vesting within 60 days of September 30, 2026.
Key Terms
beneficially owned, Shared Voting Power, Sole Dispositive Power, restricted stock units, +2 more
6 terms
beneficially ownedregulatory
"27,451,689 shares beneficially owned by Henry Schuck"
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.
Shared Voting Powerregulatory
"13,377,329 shares of Shared Voting Power"
Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.
Sole Dispositive Powerregulatory
"14,074,360 shares of Sole Dispositive Power"
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.
restricted stock unitsfinancial
"shares issuable upon the vesting of restricted stock units within 60 days"
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
Stockholders Agreementregulatory
"DO Holdings is a party to that certain Stockholders Agreement"
Irrevocable Proxyregulatory
"DO Holdings is a party to that certain Irrevocable Proxy"
An irrevocable proxy is a legal authorization in which a shareholder gives another person or entity the permanent right to vote their shares and cannot later take that voting permission back. It matters to investors because it locks who controls voting power on key issues—like board elections, mergers, or major policy changes—so it can change corporate control and influence the value or direction of an investment much like handing someone an unchangeable voting card.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
How many ZoomInfo shares does Henry Schuck report owning?
Henry Schuck reports beneficial ownership of 27,451,689 shares, or 9.4%. The percentage is based on 291,110,046 ZoomInfo shares outstanding as of July 31, 2026.
How many ZoomInfo shares does Kirk Norman Brown report owning?
Kirk Norman Brown reports beneficial ownership of 20,993,243 shares, or 7.2%. The percentage is based on 291,110,046 ZoomInfo shares outstanding as of July 31, 2026.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 5)
ZoomInfo Technologies Inc.
(Name of Issuer)
Common Stock
(Title of Class of Securities)
98980F104
(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):
98980F104
1
Names of Reporting Persons
Schuck Henry
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
UNITED STATES
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
14,074,360.00
6
Shared Voting Power
13,377,329.00
7
Sole Dispositive Power
14,074,360.00
8
Shared Dispositive Power
13,377,329.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
27,451,689.00
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)
9.4 %
12
Type of Reporting Person (See Instructions)
IN
Comment for Type of Reporting Person: Sole Voting Power and Sole Dispositive Power shown in Boxes 5 and 7 consists of 11,389,450 shares of Common Stock, par value $0.01 per share (the "Common Stock"), of ZoomInfo Technologies Inc. (the "Issuer") held directly by Henry Schuck, (ii) 13,787 shares of Common Stock issuable upon the vesting of restricted stock units within 60 days of September 30, 2026, (iii) 2,224,173 shares of Common Stock held directly by HSKB Funds, LLC, (iv) 209,574 shares of Common Stock held directly by HSKB Funds II, LLC, and (v) 237,376 shares of Common Stock held by a grantor trust. HSKB Funds, LLC and HSKB Funds II, LLC are managed by HLS Management, LLC. Henry Schuck is the sole member of HLS Management, LLC. Henry Schuck only has an economic interest in 1,848,514 shares of Common Stock held by HSKB and no economic interest in shares of Common Stock held by HSKB II.
Shared Voting Power and Shared Dispositive Power shown in Boxes 6 and 8 consists of 13,377,329 of shares of Common Stock held directly by DO Holdings (WA), LLC ("DO Holdings"). DO Holdings is substantially owned by Henry Schuck and Kirk Norman Brown.
The percentage shown in Box 11 is calculated based on 291,110,046 shares of Common Stock outstanding as of July 31, 2026, as reported in the 10-Q for the quarterly period ended June 30, 2026 filed with the Securities and Exchange Commission by the issuer on August 5, 2026 (the "Second Quarter 10-Q").
SCHEDULE 13G
CUSIP Number(s):
98980F104
1
Names of Reporting Persons
DO Holdings (WA), 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
WASHINGTON
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
13,377,329.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
13,377,329.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
13,377,329.00
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)
4.6 %
12
Type of Reporting Person (See Instructions)
OO
Comment for Type of Reporting Person: Shared Voting Power and Shared Dispositive Power shown in Boxes 6 and 8 held by DO Holdings is substantially owned by Henry Schuck and Kirk Norman Brown.
The percentage shown in Box 11 is calculated based on 291,110,046 shares of Common Stock outstanding as of July 31, 2026, as reported in the Second Quarter 10-Q.
SCHEDULE 13G
CUSIP Number(s):
98980F104
1
Names of Reporting Persons
Brown Kirk Norman
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
UNITED STATES
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
7,615,914.00
6
Shared Voting Power
13,377,329.00
7
Sole Dispositive Power
7,615,914.00
8
Shared Dispositive Power
13,377,329.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
20,993,243.00
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)
7.2 %
12
Type of Reporting Person (See Instructions)
IN
Comment for Type of Reporting Person: Shared Voting Power and Shared Dispositive Power shown in Boxes 6 and 8 consists of 13,377,329 of Common Stock held directly by DO Holdings. DO Holdings is substantially owned by Henry Schuck and Kirk Norman Brown.
The percentage shown in Box 11 is calculated based on 291,110,046 shares of Common Stock outstanding as of July 31, 2026, as reported in the Second Quarter 10-Q.
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
ZoomInfo Technologies Inc.
(b)
Address of issuer's principal executive offices:
330 W Columbia Way, Floor 8, Vancouver, WA 98660
Item 2.
(a)
Name of person filing:
This statement is filed by Henry Schuck, DO Holdings and Kirk Norman Brown (together the "Reporting Persons").
(b)
Address or principal business office or, if none, residence:
For Mr. Schuck, 300 W Columbia Way, Floor 8, Vancouver, WA 98660
For DO Holdings, 300 W Columbia Way, Floor 8, Vancouver, WA 98660
For Mr. Brown, c/o Wildwood Law Group, 3915 NE 15th Ave, #362, Portland, OR 97212
(c)
Citizenship:
For Mr. Schuck, United States of America. DO Holdings is a Washington limited liability company. For Mr. Brown, United States of America.
(d)
Title of class of securities:
Common Stock
(e)
CUSIP No.:
98980F104
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:
Henry Schuck 27,451,689
DO Holdings 13,377,329
Kirk Norman Brown 20,993,243
(b)
Percent of class:
Henry Schuck 9.4%
DO Holdings 4.6%
Kirk Norman Brown 7.2%
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
Henry Schuck 14,074,360
DO Holdings 0
Kirk Norman Brown 7,615,914
(ii) Shared power to vote or to direct the vote:
Henry Schuck 13,377,329
DO Holdings 13,377,329
Kirk Norman Brown 13,377,329
(iii) Sole power to dispose or to direct the disposition of:
Henry Schuck 14,074,360
DO Holdings 0
Kirk Norman Brown 7,615,914
(iv) Shared power to dispose or to direct the disposition of:
Henry Schuck 13,377,329
DO Holdings 13,377,329
Kirk Norman Brown 13,377,329
Item 5.
Ownership of 5 Percent or Less of a Class.
Not Applicable
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.
Not Applicable
Item 8.
Identification and Classification of Members of the Group.
If a group has filed this schedule pursuant to §240.13d-1(b)(1)(ii)(J), so indicate under Item 3(j) and attach an exhibit stating the identity and Item 3 classification of each member of the group. If a group has filed this schedule pursuant to §240.13d-1(c) or §240.13d-1(d), attach an exhibit stating the identity of each member of the group.
DO Holdings is a party to that certain (i) Stockholders Agreement (the "Stockholders Agreement") dated as of June 3, 2020, among the Issuer, the TA Stockholders (as defined therein), the Carlyle Stockholders (as defined therein) and the Founder Stockholders (as defined therein and which initially includes DO Holdings, HSKB Funds, LLC, and HSKB Funds II, LLC) and (ii) the Irrevocable Proxy (the "Irrevocable Proxy") dated as of June 3, 2020, among the TA Stockholders, the Carlyle Stockholders, the Founder Stockholders and 22C (as defined therein, and together with the TA Stockholders, the Carlyle Stockholders and the Founder Stockholders, the "Other Parties").
By virtue of DO Holdings being a party to the Stockholders Agreement and the Irrevocable Proxy, each of the Reporting Persons on this Schedule 13G may be deemed to be members of a "group," as defined in Rule 13d-5 of the Securities Exchange Act of 1934, as amended, with the Other Parties. The share ownership reported for the Reporting Persons does not include any securities of the Issuer owned by the Other Parties, and each of the Reporting Persons disclaims beneficial ownership of the securities beneficially owned by the Other Parties.
Item 9.
Notice of Dissolution of Group.
Not Applicable
Item 10.
Certifications:
Not Applicable
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.
