BlackRock (NASDAQ: IDCC) reports 3.36M shares, 13.1% ownership stake

Rhea-AI Filing Summary

BlackRock, Inc. filed an amended Schedule 13G reporting beneficial ownership of 3,361,093 shares of InterDigital, Inc. common stock, representing 13.1% of the class as shown on the cover. The filing shows sole voting power of 3,293,802 shares and sole dispositive power of 3,361,093 shares. The cover lists 03/31/2026 and the amendment is signed 04/24/2026.

Insights

Institutional Ownership Analyst

BlackRock reports a 13.1% passive holding in InterDigital as of 03/31/2026.

BlackRock, through reporting business units, states beneficial ownership of 3,361,093 shares with sole voting power of 3,293,802 shares. The filing is an amendment to a Schedule 13G and reflects aggregated holdings by certain BlackRock units.

The filing is descriptive: it documents ownership and voting/dispositive powers and includes Exhibit 99 for subsidiary identification. Further changes in holdings would appear in subsequent amendments or Forms 13D if an active intent to influence is declared.

Key Figures

Beneficial ownership: 3,361,093 shares Percent of class: 13.1% Sole voting power: 3,293,802 shares +3 more

6 metrics

Beneficial ownership 3,361,093 shares Amount beneficially owned (Item 4(a))

Percent of class 13.1% Percent of class (Item 4(b))

Sole voting power 3,293,802 shares Sole power to vote or direct the vote (Item 4(c)(i))

Sole dispositive power 3,361,093 shares Sole power to dispose or direct disposition (Item 4(c)(iii))

Cover date 03/31/2026 Date on cover page

Signature date 04/24/2026 Filing signed by Spencer Fleming

Key Terms

beneficially owned, sole dispositive power, Schedule 13G/A

3 terms

beneficially owned regulatory

"this reflects the securities beneficially owned, or deemed to be beneficially owned"

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 dispositive power regulatory

"Sole power to dispose or to direct the disposition of: 3361093"

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.

Schedule 13G/A regulatory

"Amendment No. 17 ) InterDigital, Inc. Common Stock ... SCHEDULE 13G/A"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 17)

InterDigital, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

45867G101

(CUSIP Number)

03/31/2026

(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): 45867G101

1

Names of Reporting Persons

BlackRock, 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 3,293,802.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 3,361,093.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,361,093.00

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)

13.1 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: InterDigital, Inc.
(b)	Address of issuer's principal executive offices: 200 BELLEVUE PARKWAY, SUITE 300 WILMINGTON DE 19809-3727
Item 2.
(a)	Name of person filing: BlackRock, Inc. In accordance with SEC Release No. 34-39538 (January 12, 1998), this Schedule 13G reflects the securities beneficially owned, or deemed to be beneficially owned, by certain business units (collectively, the "Reporting Business Units") of BlackRock, Inc. and its subsidiaries and affiliates. It does not include securities, if any, beneficially owned by other business units whose beneficial ownership of securities are disaggregated from that of the Reporting Business Units in accordance with such release.
(b)	Address or principal business office or, if none, residence: BlackRock, Inc., 50 Hudson Yards New York, NY 10001
(c)	Citizenship: See Item 4 of Cover Page
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 45867G101
Item 4.	Ownership
(a)	Amount beneficially owned: 3361093
(b)	Percent of class: 13.1 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 3293802
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 3361093
	(iv) Shared power to dispose or to direct the disposition of: 0
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.
	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. Various persons have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of the common stock of InterDigital, Inc.. No one person's interest in the common stock of InterDigital, Inc. is more than five percent of the total outstanding common shares.
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 99
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.

BlackRock, Inc.

Signature:	Spencer Fleming
Name/Title:	Managing Director
Date:	04/24/2026

Exhibit Information

Exhibit 24: Power of Attorney Exhibit 99: Item 7

FAQ

What stake does BlackRock (IDCC) report in this Schedule 13G/A?

BlackRock reports beneficial ownership of 3,361,093 shares, equal to 13.1% of InterDigital common stock as listed. This figure appears on the filing cover and Item 4(a) as the reported amount.

What voting and dispositive powers does BlackRock report for IDCC shares?

The filing shows sole voting power of 3,293,802 shares and sole dispositive power of 3,361,093 shares. Item 4 breaks out sole/shared voting and dispositive powers with zeros for shared powers.

What reporting period and signature date are on the amendment?

The cover lists the date 03/31/2026 (reporting period) and the amendment is signed by Spencer Fleming on 04/24/2026, as shown in the signature block at the end of the filing.

Does the Schedule 13G/A identify other parties with control over the shares?

Item 6 states various persons may have rights to dividends or sale proceeds, but no single person's interest exceeds 5%. The filing attributes holdings to BlackRock reporting business units, per Item 2 disclosure.

Is this filing an active intent to influence InterDigital management?

This submission is an amended Schedule 13G, which typically reports passive holdings. The filing does not state an intent to influence or control; it documents ownership and voting/dispositive powers only.