Jennifer Hamann: Union Pacific CFO Retiring in Early 2027

Union Pacific said on Friday, Oct. 16 that chief financial officer Jennifer Hamann will retire in early 2027. In TradeFlock's reading of the proxy's retirement rules, she appears to meet the age 55 test for 2025 equity awards but not the age 62 test for 2023 and 2024 awards, so her exact exit date matters for 2024 awards that the proxy schedules to finish vesting on Feb. 8, 2027. It named no successor or date, and its Norfolk Southern merger is still in Surface Transportation Board review.

What Union Pacific Announced Friday

In a Form 8-K filed Oct. 16, Union Pacific said Hamann "plans to retire as Executive Vice President and Chief Financial Officer effective in early 2027." Until then she keeps her current responsibilities. The filing adds: "The Company will announce additional details about this transition in the future."

The company's Oct. 16 press release, Exhibit 99.1 to the 8-K, says she joined the railroad in 1992 on the audit staff and became CFO in January 2020. It adds: "The company will announce succession plans at a later date." Chief executive Jim Vena said she "never said yes, unless she believed it was the right thing to do for Union Pacific." Hamann said she remains "an ardent supporter of the merger."

The release is headlined "After 35 Years of Service," and Hamann says "nearly 35 years." The proxy lists 34 years of tenure and 34.0 years of credited service at the end of 2025. TradeFlock's reading is rounding and timing: a 1992 start means about 34 years then and close to 35 by early 2027 (TradeFlock's estimate).

What the Proxy's Retirement Rules Say About Equity

The proxy statement filed March 25 sets different retirement rules by grant year. For 2025 awards, it says the continued employment requirement lapses "if an executive retires and has attained either age 55 with 10 years of vesting service, age 60 with 5 years of vesting service, or age 65 under the Company pension plan, so long as the executive remained employed until December 31st in the year of grant." For 2023 and 2024 awards, it says the requirement lapses "if an executive retires and has attained age 62 with 10 years of vesting service and remains employed until September 30th in the year of grant."

The proxy adds that the compensation committee "may, but is not required to, waive the related restriction period and/or employment requirements." It says vesting service follows the Basic Plan's rules, does not give Hamann's figure and does not apply these rules to her individually.

It lists Hamann at age 58 with 34 years of tenure. TradeFlock's reading: at 58 with 34 years she clears the age 55 and 10 year test for 2025 awards, and she was employed on Dec. 31, 2025, but she is below age 62, so the 2023 and 2024 rule would not lapse her employment requirement unless the committee waives it.

Which Awards Depend on Her Exit Date

The proxy's vesting schedule lists awards that were unvested at Dec. 31, 2025. The Feb. 9, 2026 vest date has since passed. TradeFlock's reading of that schedule leaves out tranches dated February 2026, and TradeFlock did not confirm that they vested:

• 2023 awards: scheduled to vest Feb. 9, 2026, so TradeFlock treated them as no longer open.
• 2024 awards: 5,938 stock options scheduled for Feb. 8, 2027, and 6,632 performance stock units, at target, with a performance period ending Dec. 31, 2026 and a Feb. 8, 2027 vest date.
• 2025 awards: 16,426 stock options (TradeFlock's sum of 8,213 on each of Feb. 6, 2027 and Feb. 6, 2028) and 7,392 performance stock units, at target, with a performance period ending Dec. 31, 2027 and a Feb. 6, 2028 vest date.

If Hamann leaves before Feb. 8, 2027, the age 62 rule would not cover the 2024 awards, and the proxy does not say what happens to them without a waiver. "Early 2027" could fall before or after those February dates. The age 55 rule speaks only to the employment requirement, and the units still carry the performance periods above. The proxy does not cover 2026 awards.

Her Pension Figures Are a 2025 Illustration

The proxy's pension table, as of Dec. 31, 2025, shows 34.0 years of credited service and these present values:

• Basic Plan: $1,447,574.
• Supplemental Plan: $4,831,055.

Together that is $6,278,629 (TradeFlock's math: $1,447,574 plus $4,831,055). The proxy describes these as estimated present values of benefits payable at normal retirement age 65, as a single life annuity, calculated as of Dec. 31, 2025. They are a year-end 2025 illustration, not what she will receive.

The proxy says Hamann was eligible for early retirement under both plans then. Assuming a Dec. 31, 2025 termination, it shows a Supplemental Plan single life annuity of $34,690 a month, or $416,280 a year (TradeFlock's math: 34,690 multiplied by 12). That is the proxy's illustration, not a forecast of her 2027 benefit.

Where the Norfolk Southern Review Stands

Union Pacific's 10-Q, filed July 23, said the board accepted the revised application effective May 28, 2026, "while holding the proceedings in abeyance," and that the deal was "currently expected to be completed in 2027." The board's releases show what changed after that:

• Aug. 18: the board removed the proceeding from abeyance and adopted a procedural schedule, saying the step was not a ruling on the merits.
• Sept. 18: it denied motions for summary denial from BNSF, CSX and a group of shipper associations, again without a merits ruling.
• Oct. 6: the board's UP-NS Merger Resources page lists a decision accepting four late-filed descriptions of anticipated responsive applications.

Opening comments are due Nov. 18, 2026, and responses are due Feb. 16, 2027, according to the Sept. 18 release. The board has made no final decision on the merger.

What Comes Next at Union Pacific

Union Pacific has not said who will replace Hamann, when she will leave or on what terms, and the 8-K gives no figures. Watch for a successor announcement, an exit date relative to the Feb. 6 and Feb. 8 vest dates, and any retirement agreement filed with the SEC.

For more on leadership changes at railroads and elsewhere, read how CSX left its COO job open, how Harmony Biosciences named its COO as CEO and how Bausch + Lomb's CEO contract shaped his exit.

Cover image: Railway tracks at sunset, by W.carter via Wikimedia Commons, CC0 1.0 (cropped).