Jim Grenon
Jim Grenon is a billionaire investor and the founder of Calgary-based investment firm Tom Capital Management. He has been in the news for his significant shareholding in NZME, the owner of the New Zealand Herald, where he has proposed changes to the board of directors, seeking to influence the company’s future direction. Grenon, who moved to New Zealand in 2012, has a background in corporate finance and tax law, and he has been involved in various media ventures, including The Centrist. His wealth and legal battles over tax issues in Canada have also garnered attention.
Not in the pool (under ¢1).
Recent news mentions
Jim Grenon is involved in a defamation case related to anti-co-governance campaigner Julian Batchelor.
Media Insider: RNZ shake-up: New board chair, directors revealed; Who’s in line to be CEO?; PR boss: ‘All the big ad agencies are morphing into PR stunt agencies’
New Zealand· 2026-05-29
Jim Grenon has increased his stake in NZME, acquiring more shares.
Media Insider: A fight for evening viewers - new TVNZ quiz show, 6pm news ratings; Stuff faces print-plant eviction; NBR takes on MBIE; Why are we waiting a week for MAFS?New Zealand· 2026-02-27
Jim Grenon is funding Julian Batchelor’s defamation case against TVNZ.
Media Insider: John Campbell’s new Morning Report role - RNZ’s robust board discussions; Girls Uninterrupted podcast ends; Sky TV sport content facelift; Westpac agency movesNew Zealand· 2025-12-18
Earlier in the trial, and under cross-examination, Batchelor revealed that his legal costs were being funded by Grenon, who is a shareholder and director of NZ Herald publisher NZME.
Media Insider: Julian Batchelor v TVNZ defamation case - Jim Grenon funding and website story in spotlightNew Zealand· 2025-12-18
Jim Grenon is funding Julian Batchelor's defamation case against TVNZ.
Media Insider: Julian Batchelor v TVNZ defamation case – former TVNZ presenter Peter Williams takes stand in support of Jim Grenon-funded Batchelor claimNew Zealand· 2025-12-16
Grenon has increased his stake in NZME to just under 18.5%.
Media Insider: Rugby betting complaint – Sky TV changes Israel Dagg promo; Is TVNZ closer to a sale?; Cartoonist’s financial support for The Platform; Top ad exec resignsNew Zealand· 2025-10-02
Jim Grenon has acquired more shares in NZME, moving closer to becoming the company's biggest shareholder.
Media Insider: TVNZ chair Alastair Carruthers stepping down early; The Traitors Australia defects to NZ; Ex-Herald editor urges Media Council to review cold-case story rulingNew Zealand· 2025-09-25
Jim Grenon was involved in establishing the Centrist and has since become a director and substantial shareholder of NZME.
Media Insider: Briscoes ad account faces shake-up; Tom Phillips injunction - Linda Clark squares off with media; Unauthorised Jacinda Ardern book; New F1 TV rights dealNew Zealand· 2025-09-18
Jim Grenon was involved in establishing the Centrist in 2023 and has since become a director at NZME.
Media Insider: Briscoes advertising account faces shake-up; Tom Phillips injunction - lawyer and ex-TV journalist Linda Clark squares off with media firms; Unauthorised Jacinda Ardern book cover; New Formula 1 TV rights deal in NZNew Zealand· 2025-09-18
Jim Grenon is a substantial shareholder of NZME and has been leading a proposed cleanout of directors.
Media Insider: NZME shareholder Jim Grenon lifts investment in media firmNew Zealand· 2025-09-15
Jim Grenon also bought additional shares in NZME, alongside Steven Joyce.
New Zealand sharemarket up 0.4% despite Hallenstein resignation – Market closeNew Zealand· 2025-09-02
Jim Grenon was involved in establishing the Centrist and is now a shareholder of NZME.
Media Insider: Unauthorised Jacinda Ardern book - the journalists behind it and the prominent broadcasters who have been interviewedNew Zealand· 2025-06-10
Jim Grenon was involved in establishing the Centrist and is now a shareholder of NZME.
Media Insider: Unauthorised Jacinda Ardern book - the journalists behind it and the prominent broadcasters who have been interviewedNew Zealand· 2025-06-10Grenon went public in March with a plan to replace the entire board with himself and several other nominees.
NZME board reshuffle: Steven Joyce chair, Jim Grenon directorNew Zealand· 2025-06-03
NZME named Jim Grenon as a director.
Ebos block trade rattles index; NZX 50 drops 0.7% - Market closeNew Zealand· 2025-06-03
Jim Grenon has been agitating for change at the publicly listed media company NZME.
Media Insider: NZME’s changing of the guard - Steven Joyce, Jim Grenon and the focus on editorial endeavour and an intensified real estate battleNew Zealand· 2025-06-03
Grenon is expected to join the NZME board and has been critical of the company's performance.
Media Insider: NZME shareholder meeting - Steven Joyce set to become chair, Jim Grenon to join board; what to expect at today’s meetingNew Zealand· 2025-06-02
Jim Grenon is a substantial shareholder and director at NZME, known for his disruptive approach to the company's board.
Media Insider: Outspoken NZME shareholder sells out of media company; Jim Grenon lifts stake to about 13%New Zealand· 2025-05-21
Jim Grenon is included in the new group of directors for NZME.
NZ sharemarket rises with gentailers leading after Contact-Manawa dealNew Zealand· 2025-05-09
Grenon is a Canadian-born private equity businessman who has been living in New Zealand since 2012.
Media Insider: NZME’s bitter board battle at end - Steven Joyce to be chair, Jim Grenon to be director, alongside three existing board membersNew Zealand· 2025-05-09
Jim Grenon is supporting the nomination of Steven Joyce to become a director at NZME.
Media Insider: Revealed - TVNZ’s noise and interview rules as RNZ prepares to move in; Kiwi ad agencies take aim at global merger; Untimely deaths of three respected NZ editorsNew Zealand· 2025-05-08
Jim Grenon is supporting the nomination of Steven Joyce to become a director at NZME.
Media Insider: Revealed - TVNZ’s noise and interview rules as RNZ prepares to move in; Kiwi ad agencies take aim at global merger; Untimely deaths of three respected NZ editorsNew Zealand· 2025-05-08Auckland businessman Jim Grenon has been pushing for a clean-out of existing directors.
Media Insider: NZME board battle – shareholder Osmium Partners withdraws its two nominees in further sign that compromise may be imminentNew Zealand· 2025-05-08
Grenon is a businessman aiming to reshape NZME and has a significant shareholding in the company.
Jim Grenon: The businessman aiming to reshape NZMENew Zealand· 2025-05-07
Jim Grenon is involved in a board battle at NZME and has been cleared of any code breach by the Takeovers Panel.
Media Insider: NZME board battle - Takeovers Panel clears Jim Grenon of any code breachNew Zealand· 2025-05-06Jim Grenon is a 9.97% shareholder seeking a takeover of NZME.
SkyCity falls 6% as NZX 50 trades flat – Market closeNew Zealand· 2025-05-06
Grenon, a 9.97% shareholder, was seeking a cleanout of directors.
Media Insider: NZME board battle - former National Party minister Steven Joyce in line to be director and chair, amid raft of confirmed and new board nominationsNew Zealand· 2025-05-05Jim Grenon is seeking a board overhaul and has been critical of the company’s operational and financial performance.
Media Insider: NZME’s new-look executive team - editor-in-chief returns to the top table, chief commercial officer leaving companyNew Zealand· 2025-05-05
Grenon is seeking to overhaul the board of NZME at the annual shareholders’ meeting.
Media Insider: NZME board battle - Jim Grenon nominee Philip Crump on NZ Herald editorial quality and trust, says Grenon is not a ‘political extremist’New Zealand· 2025-04-20
Jim Grenon is seeking to overhaul the existing board at NZME.
Media Insider: Gold FM drops hosts to become music-only radio station; Top Sky TV executive to depart; TVNZ, Netflix and the battle for your phone and TV screenNew Zealand· 2025-04-16
