Mythos Model Export Control, Hynix HBM4E Pull Foward, South Korea May Exports, & More—Headline Review (Semis & IT Hardware)

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Mythos Model Export Control, Hynix HBM4E Pull Foward, South Korea May Exports, & More—Headline Review (Semis & IT Hardware)

Equity Research

Flash Comment — June 15, 2026

IT Hardware & Communications Networking

Semiconductors

Mythos Model Export Control, Hynix HBM4E

Pull Foward, South Korea May Exports,

& More—Headline Review (Semis & IT

Hardware)

Our Call Aaron Rakers, CFA

In an effort to try to keep pace with the rapid news flow across our Semiconductor & IT Equity Analyst | Wells Fargo Securities, LLC

Aaron.Rakers@wellsfargo.com | 314-875-2508

Hardware universe, we summarize a few of the key headlines we saw this morning.

Michael Tsvetanov, CFA

Associate Equity Analyst | Wells Fargo Securities, LLC

Initial Thoughts Michael.Tsvetanov@wellsfargo.com | 314-875-2558

Richard Strifler, CFA

1. Anthropic Fable / Mythos Model Export Control Associate Equity Analyst | Wells Fargo Securities, LLC

Richard.Strifler@wellsfargo.com | 314-875-3234

• Following last week's release of its Fable 5 / Mythos model, Anthropic has disabled

customer access to its new model following an order from the US government to

suspend the model use from all foreign nationals, citing national security issues

following the US government's awareness of a jailbreaking method of the model.

• We would note comments David Sacks, Co-Chair, President's Council of Advisers

on Science & Technology, noting the US administration does believe the jailbreak is

serious, and the admin wants the export control to be lifted upon cooperation of

patching the safety issue.

• Anthropic has disagreed with the reported jailbreak as a cause for recalling the model,

and noted the vulnerabilities listed are all relatively simple and have been found as

possible using other publicly available models as well.