Analysis: Markwayne Mullin's purchase of AMKR (Amkor Technology, Inc.)

Assessment: On watch

Member initiated a new semiconductor cluster following public CHIPS Act awards; jurisdiction relevance is high but informational edge appears low.

Member: Markwayne Mullin
Party / state: R-OK
Chamber: Senate
Transaction: Purchase
Amount: $15,001 - $50,000
Ticker: AMKR
Company: Amkor Technology, Inc.
Trade date: 2026-01-05
Disclosure date: 2026-02-04
Disclosure lag: 30 days

Executive summary

Senator Markwayne Mullin, a member of the Appropriations and Armed Services committees, purchased AMKR (Amkor Technology) on January 5, 2026. This purchase is part of a broader late-December/early-January cluster of semiconductor-related trades including AMAT and LRCX.

The AMKR purchase coincides with a significant sector-specific entry by the member into semiconductor and equipment stocks (AMAT, LRCX) between Dec 29, 2025, and Jan 5, 2026. While Mullin does not sit on the Commerce Committee (which oversees CHIPS Act grants), his position on the Appropriations Committee gives him oversight of the funding allocated to these programs. The trade occurred at a price of $48.13, and the stock has since decreased to $44.46, representing a roughly 7.6% unrealized decline. The timing suggests a macro-positioning on domestic semiconductor manufacturing rather than a response to a specific company-level catalyst, as no direct AMKR news or insider buying was identified immediately preceding the trade.

Timeline

2025-12-11 — Senate hearing on CHIPS Act implementation progress.
2025-12-29 — Mullin buys AMAT, LRCX, and MSFT (Semiconductor sector cluster).
2026-01-05 — Mullin purchases AMKR ($15k-$50k).
2026-02-04 — Trade disclosed to Senate Office of Public Records.

Independent analysis of public financial disclosures. Not financial or investment advice.

Sources

Markwayne Mullin · AMKR · Trading news