Abbott Richard David 4

4 · Co-Diagnostics, Inc. · Filed May 27, 2026

AI-generated summary of this filing

Updated May 27, 2026

Co-Diagnostics (CODX) President Richard Abbott Sells 680 Shares

What Happened

Richard D. Abbott, President of Co-Diagnostics, reported the vesting/conversion of 1,890 restricted stock units into common shares (acquired at $0.00) on May 23, 2026. To satisfy tax-withholding obligations, 680 of those shares were sold back to the issuer at $5.07 per share for proceeds of $3,448. The net shares retained from this vesting event were 1,210 (1,890 acquired minus 680 sold).

Key Details

Transaction date: May 23, 2026.
Conversions/awards: 1,890 shares acquired at $0.00 (transaction code A/M — RSU conversion/exercise).
Sale to issuer: 680 shares disposed at $5.07 for $3,448 (transaction code D). This sale is a "sell-to-cover" to satisfy tax withholding (see footnote F2).
Footnote F1: These shares are part of prior RSU awards (4,000 RSUs awarded 4/26/2024 and 7,334 RSUs awarded 8/13/2025) that vest in scheduled installments.
Shares owned after the transaction: not specified in the provided filing excerpt.
Filing: Form 4 filed 2026-05-27 reporting the 5/23/2026 transactions; no indication the filing was late.

Context

This was a routine RSU vesting and a sell-to-cover tax withholding, not an open-market discretionary sale. The exercise/conversion of RSUs followed by a partial automatic sale to cover taxes is common and typically reflects tax mechanics rather than a direct insider view on valuation.

Form 4

Period: 2026-05-23

President

Transactions

Award
Common Stock
[F1]
2026-05-23+1,890→ 4,097 total
Disposition to Issuer
Common Stock
[F2]
2026-05-23$5.07/sh−680$3,448→ 3,417 total
Exercise/Conversion
Restricted Stock Unit
[F1]
2026-05-23−1,890→ 7,903 total
Exercise: $0.00→ Common Stock (9,793 underlying)

Footnotes (2)

[F1]Included in 4,000 restricted stock units awarded to the Reporting Person on April 26, 2024, pursuant to the Co-Diagnostics, Inc. 2015 Long Term Incentive Plan, and vest in 6 equal installments every 6 months commencing on November 23, 2024. Included in 7,334 restricted stock units awarded to the Reporting Person on August 13, 2025, pursuant to the Co-Diagnostics, Inc. 2015 Long Term Incentive Plan, and vest in 6 equal installments every 6 months commencing on November 23, 2025.
[F2]Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSU's. This sale is mandated by the Issuer's election, under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the Reporting Person.

Signature

Richard David Abbott|2026-05-27

1 file