Cellebrite (CLBT) chair Adam Clammer reports direct and indirect shareholdings

Rhea-AI Filing Summary

Cellebrite DI Ltd. director Adam Clammer filed an initial ownership report showing his holdings of ordinary shares. He holds 71,396 shares directly, including 10,601 time-based RSUs that vest on September 17, 2026. Indirectly, he reports 13,861,007 shares held by TWC Tech Holdings II, LLC and 375,000 shares each held by a Long Term Trust and a Joint Revocable Trust, with 1,500,000 shares subject to transfer restrictions tied to performance-based vesting conditions. Clammer states he may be deemed to share beneficial ownership of certain securities but disclaims beneficial ownership beyond his pecuniary interest.

Insider Trade Summary

4 transactions reported

Mixed 4 txns

Insider CLAMMER ADAM

Role Director

Type	Security	Shares	Price	Value
holding	Ordinary Shares	--	--	--
holding	Ordinary Shares	--	--	--
holding	Ordinary Shares	--	--	--
holding	Ordinary Shares	--	--	--

Holdings After Transaction: Ordinary Shares — 71,396 shares (Direct); Ordinary Shares — 13,861,007 shares (Indirect, By TWC Tech Holdings II, LLC)

Footnotes (1)

1. Includes 10,601 time-based restricted stock units ("RSUs") granted under the Cellebrite DI Ltd. (the "Issuer") 2021 Share Incentive Plan which vest on September 17, 2026. Includes 1,500,000 ordinary shares of the Issuer subject to transfer restrictions pending the satisfaction of certain performance-based vesting conditions. As one of the managing members of the ultimate controlling entity of TWC Tech Holdings II, LLC, Mr. Clammer may be deemed to have shared beneficial ownership of the securities held directly by TWC Tech Holdings II, LLC. Mr. Clammer disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, Mr. Clammer states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

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SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

CLAMMER ADAM

(Last) (First) (Middle)

FOUR EMBARCADERO CENTER

SUITE 2100

(Street)

SAN FRANCISCO CALIFORNIA 94111

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

3. Issuer Name and Ticker or Trading Symbol
Cellebrite DI Ltd. [ CLBT ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			Chair of the Board

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Ordinary Shares	71,396(1)	D
Ordinary Shares	13,861,007(2)	I	By TWC Tech Holdings II, LLC(3)(4)
Ordinary Shares	375,000	I	By Long Term Trust(4)
Ordinary Shares	375,000	I	By Joint Revocable Trust(4)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Includes 10,601 time-based restricted stock units ("RSUs") granted under the Cellebrite DI Ltd. (the "Issuer") 2021 Share Incentive Plan which vest on September 17, 2026.

2. Includes 1,500,000 ordinary shares of the Issuer subject to transfer restrictions pending the satisfaction of certain performance-based vesting conditions.

3. As one of the managing members of the ultimate controlling entity of TWC Tech Holdings II, LLC, Mr. Clammer may be deemed to have shared beneficial ownership of the securities held directly by TWC Tech Holdings II, LLC.

4. Mr. Clammer disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, Mr. Clammer states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

Remarks:

Exhibit List: Exhibit 24 - Power of Attorney.

	/s/ Sara Bockey, Attorney-in-Fact	03/18/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

FAQ

What does Adam Clammer’s Form 3 filing for Cellebrite (CLBT) show?

The Form 3 shows Adam Clammer’s initial ownership in Cellebrite ordinary shares. It details direct holdings, indirect stakes through entities and trusts, and restricted and performance-based shares, providing a baseline view of his reported equity position as he serves as Chair of the Board.

How many Cellebrite (CLBT) shares does Adam Clammer hold directly and indirectly?

He reports 71,396 ordinary shares held directly and several large indirect positions. These include 13,861,007 shares via TWC Tech Holdings II, LLC and 375,000 shares each via a Long Term Trust and a Joint Revocable Trust, reflecting multiple ownership channels.

What restricted or performance-based Cellebrite (CLBT) shares are included in Clammer’s holdings?

His holdings include 10,601 time-based RSUs that vest on September 17, 2026. The filing also notes 1,500,000 ordinary shares subject to transfer restrictions pending satisfaction of specified performance-based vesting conditions, highlighting equity tied to future service or performance milestones.

How is TWC Tech Holdings II, LLC related to Adam Clammer’s Cellebrite (CLBT) ownership?

An indirect holding of 13,861,007 shares is reported as held by TWC Tech Holdings II, LLC. As one of the managing members of its ultimate controlling entity, Adam Clammer may be deemed to share beneficial ownership of these securities, subject to the disclaimers in the filing.

Does Adam Clammer fully acknowledge beneficial ownership of all reported Cellebrite (CLBT) securities?

He expressly disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest. The filing states that including these securities should not be seen as an admission of full beneficial ownership for Section 16 or any other purpose.

What role does Adam Clammer hold at Cellebrite (CLBT) alongside these reported shareholdings?

He is identified as Chair of the Board of Cellebrite DI Ltd. The Form 3 aligns his governance role with his reported direct and indirect equity interests, including RSUs and performance-based shares, but does not indicate any recent purchase or sale activity.