The Ledger ResearchPrivate

The Front Office

Scouting report · BLLN

Ross Taylor

  • Chief Financial Officer (principal financial and accounting officer), BLLN since 2024-01src

CFO since January 2024; previously CFO of Codexis and Abaxis

—thin record

Not ranked yet

Scouting sheet

as of 24 Sep 2026
Delivers guidance—no promises on the record yet
Answers the question—no call reviewed yet
Capital allocation—company not reviewed yet
Pay design—no proxy read yet
Skin in the game—no holding or price on file
Age
62src
In the role
3 yr
Promises scored
0
Hit rate
—
Dodges / 100 answers
—
Airtime on calls
—
Every promise, oldest firstno scored promises yet

What to weigh

Watch 3

  • His pay after 2024 is undisclosed. He was a named executive in the IPO prospectus (2024) but not in the 2026 proxy, which as an emerging growth company covers only three officers. The prospectus set his post-IPO salary at $500,000 with a 50% bonus targetsrc
  • Two tenures ended within a few years: Abaxis on its sale (about three years as CFO) and Codexis after about 3.5 years, with a severance agreementsrc
  • Skin in the game is options only. At the IPO he held no common stock, just 175,000 options at $11.55 and 75,000 at $30.78, both time-vestedsrc

In their favour 1

  • He has filed no Form 4 transaction since the IPO and no Form 144 notice of a sale. Most officers, the CEO included, have been selling since June 2026src

Career

  1. 2024-01 – now
    BillionToOne, Inc.src
    Chief Financial Officer
    Hire announced 2024-02-21 (WS-blln-2024); CFO through the November 2025 IPO
  2. 2019-08 – 2023-01
    Codexis, Inc.src
    Senior Vice President & Chief Financial Officer
    Effective 2019-08-19, succeeding the retiring Gordon Sangster. Ceased to be CFO 2023-01-23 and stayed as an adviser until 2023-03-06 (CDXS-8K-2023-02-03)
  3. 2015-08 – 2018-07
    Abaxis, Inc.src
    Chief Financial Officer
    CFO through the sale of Abaxis to Zoetis for $2.0bn in July 2018
  4. 2014-10 – 2015-07
    Abaxis, Inc.src
    Vice President of Business Development & Investor Relations
  5. 2005 – 2014
    CL King & Associatessrc
    Healthcare equity research analyst (healthcare equipment and supplies)
  6. 1999 – 2001
    UBSsrc
    Equity research analyst, biotechnology
  7. 1996 – 1999
    Smith Barneysrc
    Equity research analyst, healthcare services
    The proxy also lists CJ Lawrence among his research employers, undated

Not located: 2018-08 to 2019-08 (between the Abaxis sale and Codexis) and 2023-03 to 2024-01 (between Codexis and BillionToOne) not described in any source searched; 2001-2005 not located

Achievements

  • Was CFO of BillionToOne through its November 2025 Nasdaq IPOsrc
  • Was CFO of Abaxis from August 2015 until Zoetis bought it for $2.0bn in July 2018src
  • Was SVP & CFO of Codexis, a listed enzyme-engineering company, from August 2019 to January 2023src
  • Spent more than a decade as a sell-side healthcare equity analyst (CL King, UBS, Smith Barney, CJ Lawrence) before moving into company financesrc

Education

  • Columbia Business School, MBAsrc
  • Duke University, BA Economicssrc

Background

  • Family The 2026 proxy states there are no family relationships among any nominees, directors or executive officerssrc
  • Other Left the Codexis CFO post on 2023-01-23 when a new CFO was appointed. Under a transition and separation agreement he advised the CEO until 2023-03-06 and received 12 months' base salary as severance plus 85% of his 2022 target bonus. His unvested Codexis equity was forfeitedsrc
  • Other A Tier 2 participant in the executive severance plan: 9 months' salary on an involuntary termination, or 100% of salary plus target bonus and full equity vesting on one within 12 months of a change in controlsrc

The promise ledger

No promise on the record yet: the research routine has not scored this company's guidance.

Sources

8
  1. Filing BillionToOne DEF 14A, 2026 annual meeting (accession 0002070849-26-000024) · 2026-04-21
  2. Filing BillionToOne IPO prospectus, 424B4 (0001193125-25-270155) · 2025-11-06
  3. Filing BillionToOne 10-Q for the quarter ended 2026-06-30 (0002070849-26-000050), signature page · 2026-08-05
  4. Filing Form 3, Ross Taylor (reporting CIK 2013346), holdings at the IPO (0001193125-25-267692) · 2025-11-05
  5. Filing SEC EDGAR submissions index for BillionToOne (CIK 2070849): Forms 3, 4 and 144 filed through 2026-09-23 · 2026-09-24
  6. Filing Codexis 8-K Item 5.02, Taylor transition and separation agreement (0001193125-23-024153) · 2023-02-03
  7. Web search result WebSearch: Codexis press release 2019-08-06, 'Codexis Names Ross Taylor Senior Vice President and Chief Financial Officer' · 2026-09-24
  8. Web search result WebSearch: BillionToOne press release 2024-02-21, 'BillionToOne Announces Ross Taylor as Chief Financial Officer' · 2026-09-24