When did Gleb Reznik become CISO of American Express?

The appointment was announced in the week of March 16, 2026, per SecurityWeek Industry Moves. The record holds the announcement, not a start date.

What was Gleb Reznik's role before this appointment?

Before the appointment, Gleb Reznik was SVP, Technology Risk and Information Security at American Express, according to the announcement (SecurityWeek Industry Moves).

Who does the head of security at American Express report to?

In its fiscal 2025 annual report (Form 10-K, filed February 6, 2026), American Express describes the role that runs security as Chief Information Security Officer, reporting to the Chief Information Officer.

Executive record

Gleb Reznik

Career profile: Gleb Reznik on CISO Spotlights ↗

Gleb Reznik is Chief Information Security Officer (CISO) at American Express. The appointment was announced in the week of March 16, 2026, per SecurityWeek Industry Moves.

Before the appointment: SVP, Technology Risk and Information Security at American Express, per the same source.

1 tracked move on the Wire · Updated September 24, 2026

Career timeline

Every move the record holds for Gleb Reznik, newest first, with the earlier roles the announcements name.

week of March 16, 2026· Appointment
Named Chief Information Security Officer (CISO) at American Express
Source: SecurityWeek Industry Moves (week of 2026-03-16) ↗ · Move record
Before March 2026· Earlier role
SVP, Technology Risk and Information Security at American Express
Named in the announcement of the American Express appointment · Source: SecurityWeek Industry Moves (week of 2026-03-16) ↗

The company: American Express

Sector: Financial Services
Region: North America
Company record: Who runs security at American Express: 2 confirmed moves on the record
Annual report: Cybersecurity section of the fiscal 2025 Form 10-K, filed February 6, 2026
Reporting line: The filing describes the role that runs security as Chief Information Security Officer, reporting to the Chief Information Officer.
Board oversight: Named in the filing: Risk Committee.

Appointed in the same period

Other security chiefs in Financial Services whose appointment was announced within 90 days of Gleb Reznik's, nearest first (8 of 17). The Financial Services bench

week of March 16, 2026
John Visneski, Chief Information Security Officer (CISO) at Green Impact Exchange
March 25, 2026
Jimit Narendra Shah, Chief Information Security Officer at LIC Housing Finance
March 2026
Donna Hart, Chief Information Security Officer at SMBC Americas
week of February 16, 2026
Rich Friedberg, Chief Information Security Officer (CISO) at Envestnet
week of February 9, 2026
Leilani Farol, Senior Vice President, Chief Information Security Officer (CISO) at First Horizon
February 2026
Stephen McMaster, Chief Information Security Officer at Western Alliance Bank
May 2026
Zeeshan Manzoor, Chief Information Security Officer at Hugobank
January 22, 2026
Kailash Gaonkar, Chief Information Security Officer at IIFL Finance

Record facts

Time in the seat: About 7 months since the appointment was announced (week of March 16, 2026), as of November 2026
Moves on the record: 1 confirmed move, each with its source
On the record since: September 24, 2026
Financial Services in 2026: 42 security-leadership appointments announced in the sector on the record

How these are counted. Time in the seat: Counted in whole months from the announcement of the appointment, the date the record holds; announcements rarely give a start date.

Questions about Gleb Reznik

Who is the CISO of American Express?: Gleb Reznik is Chief Information Security Officer (CISO) at American Express. The appointment was announced in the week of March 16, 2026, per SecurityWeek Industry Moves.
When did Gleb Reznik become CISO of American Express?: The appointment was announced in the week of March 16, 2026, per SecurityWeek Industry Moves. The record holds the announcement, not a start date.
What was Gleb Reznik's role before this appointment?: Before the appointment, Gleb Reznik was SVP, Technology Risk and Information Security at American Express, according to the announcement (SecurityWeek Industry Moves).
Who does the head of security at American Express report to?: In its fiscal 2025 annual report (Form 10-K, filed February 6, 2026), American Express describes the role that runs security as Chief Information Security Officer, reporting to the Chief Information Officer.

Sources

1.SecurityWeek Industry Moves (week of 2026-03-16) ↗: the appointment at American Express, week of March 16, 2026
2.SEC EDGAR: Form 10-K, fiscal 2025 ↗: the company's cybersecurity disclosure
3.CISO Spotlights career profile ↗: a fuller career profile on a sister site

This record begins with CISO Tribune's tracking in 2026.

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