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Who

John A. Kritzmacher

Director

Company insider

Files Form 4 as: Director, InterDigital; Director, Unisys Corporation New; Director, QualTek Services; Former CFO and EVP, John Wiley & Sons; Director, Duff & Phelps; EVP & Chief Financial Officer, Global Crossing; Chief Financial Officer, Lucent Technologies.

In numbers

Trades disclosed
294
Buys
1
Sells
28
Bought
$2,319
Sold
$8.8M
Companies
7
Companies where not an officer
4
First trade
3 Mar 2006
Last trade
22 Jul 2026
Last filed
24 Jul 2026

Companies traded

Where they are an officer
WLY John Wiley & SonsOfficer · Broadcasting & cable · last 31 Dec 20210 buys · 6 sells
Global CrossingOfficer · last 4 Oct 20110 buys · 0 sells
Lucent TechnologiesOfficer · last 30 Nov 20060 buys · 1 sell
Everywhere else they filed: board seats, 10% stakes, other companies
IDCC InterDigitalDirector · Funds, Shells & SPACs · last 22 Jul 20261 buy · 21 sells
UIS Unisys Corporation NewDirector · IT Services & Consulting · last 27 Feb 20260 buys · 0 sells
QualTek ServicesDirector · last 7 Dec 20220 buys · 0 sells
Duff & PhelpsDirector · last 23 Apr 20130 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
20Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
22 Jul 2026filed 24 Jul 2026IDCC InterDigitalFunds, Shells & SPACsSEC FORM 4 Code A—2.448 at $0.00filing
22 Jul 2026filed 24 Jul 2026IDCC InterDigitalFunds, Shells & SPACsSEC FORM 4 Code A—2.45 at $0.00filing
12 Jun 2026filed 16 Jun 2026IDCC InterDigitalFunds, Shells & SPACsSEC FORM 4 Sold$101K365 at $276.64filing
12 Jun 2026filed 16 Jun 2026IDCC InterDigitalFunds, Shells & SPACsSEC FORM 4 Sold$101K365 at $276.64filing
11 Jun 2026filed 12 Jun 2026IDCC InterDigitalFunds, Shells & SPACsSEC FORM 4 Code D$2190.864 at $253.91filing
11 Jun 2026filed 12 Jun 2026IDCC InterDigitalFunds, Shells & SPACsSEC FORM 4 Code D$2180.86 at $253.91filing
10 Jun 2026filed 12 Jun 2026IDCC InterDigitalFunds, Shells & SPACsSEC FORM 4 Code A—906 at $0.00filing
10 Jun 2026filed 12 Jun 2026IDCC InterDigitalFunds, Shells & SPACsSEC FORM 4 Code A—906 at $0.00filing
22 Apr 2026filed 24 Apr 2026IDCC InterDigitalFunds, Shells & SPACsSEC FORM 4 Code A—1.94 at $0.00filing
22 Apr 2026filed 24 Apr 2026IDCC InterDigitalFunds, Shells & SPACsSEC FORM 4 Code A—1.94 at $0.00filing
27 Feb 2026filed 2 Mar 2026UIS Unisys Corporation NewIT Services & ConsultingSEC FORM 4 Code A—82,305 at $0.00filing
27 Feb 2026filed 2 Mar 2026UIS Unisys Corporation NewIT Services & ConsultingSEC FORM 4 Code A—82,305 at $0.00filing
28 Jan 2026filed 30 Jan 2026IDCC InterDigitalFunds, Shells & SPACsSEC FORM 4 Code A—2.195 at $0.00filing
28 Jan 2026filed 30 Jan 2026IDCC InterDigitalFunds, Shells & SPACsSEC FORM 4 Code A—2.19 at $0.00filing
23 Dec 2025filed 23 Dec 2025IDCC InterDigitalFunds, Shells & SPACsSEC FORM 4 Sold$414K1,250 at $331.00filing
9 Dec 2025filed 10 Dec 2025IDCC InterDigitalFunds, Shells & SPACsSEC FORM 4 Sold$447K1,250 at $357.37filing
25 Nov 2025filed 26 Nov 2025IDCC InterDigitalFunds, Shells & SPACsSEC FORM 4 Sold$433K1,250 at $346.62filing
11 Nov 2025filed 12 Nov 2025IDCC InterDigitalFunds, Shells & SPACsSEC FORM 4 Sold$451K1,250 at $360.63filing
22 Oct 2025filed 24 Oct 2025IDCC InterDigitalFunds, Shells & SPACsSEC FORM 4 Code A—2 at $0.00filing
23 Jul 2025filed 25 Jul 2025IDCC InterDigitalFunds, Shells & SPACsSEC FORM 4 Code A—2.73 at $0.00filing

News

Reviewing Atlassian (NASDAQ:TEAM) and InterDigital (NASDAQ:IDCC)IDCC · dailypolitical.com · 20 Oct 2026Financial Analysis: InterDigital (NASDAQ:IDCC) versus Xperi (NYSE:XPER)IDCC · dailypolitical.com · 16 Oct 2026

0 headlines in the last 90 days name John A. Kritzmacher; 2 articles from the last 14 days about the 1 company they traded most, at most three about any one of them.

Sectors

Financials22
Communications6
Not placed1

Buys in green, sells in red, by the company’s sector.

Related people

Deborah E. Wiley10% owner · 10% owner at John Wiley & Sons, filing Form 4 there in the last year
Bradford Wiley10% owner · 10% owner at John Wiley & Sons, filing Form 4 there in the last year
Brian O. HemphillDirector · Director at John Wiley & Sons, filing Form 4 there in the last year
David C. DobsonDirector · Director at John Wiley & Sons, filing Form 4 there in the last year
Karen N. MaddenDirector · Director at John Wiley & Sons, filing Form 4 there in the last year
Rajesh PankajChief Technology Officer · Also traded IDCC in the last 90 days
Joan H. GillmanDirector · Also traded IDCC in the last 90 days