Aiyar Ram 4

4 · Korro Bio, Inc. · Filed May 28, 2026

AI-generated summary of this filing

Updated May 28, 2026

Korro Bio (KRRO) CEO Aiyar Ram Receives 50,000-Share Award

What Happened

Aiyar Ram, President and CEO (also a director) of Korro Bio, received 50,000 shares of common stock on May 26, 2026. The shares were issued at a per-share value of $12.33, for a total reported value of $616,500. This transaction was an award/settlement of performance stock units (PSUs), not an open-market purchase or sale.

Key Details

Transaction type/code: Award/Grant (coded "A" — settlement of PSUs)
Transaction date: May 26, 2026; Form 4 filed May 28, 2026 (filed within the typical 2‑business‑day window)
Price/value: $12.33 per share; total value $616,500
Shares owned after transaction: Not specified in the provided excerpt of the filing
Relevant footnotes:
- F1: Shares issued upon settlement and vesting of a PSU granted under the company's 2023 Plan, vested upon achievement of performance condition on May 26, 2026.
- F2: Includes 40,000 shares issuable upon settlement of a previously reported restricted stock unit (Form 4 dated Feb 3, 2026).
- F3: Some shares are held by The Ram Aiyar Irrevocable Trust; the reporting person disclaims beneficial ownership except to the extent of pecuniary interest.

Context

This was a compensation-related award (PSU vesting) — common for executives and not the same as an outright market purchase. Such awards reflect plan-driven vesting upon performance goals rather than a direct signal of buying or selling intent.
The filing appears timely (reported two days after the transaction).

Form 4

Period: 2026-05-26

DirectorPresident and CEO

Transactions

Holdings

Footnotes (3)

[F1]Represents shares of common stock issued upon settlement and vesting of a performance stock unit (PSU) granted under the Issuer's 2023 Stock Option and Incentive Plan (the 2023 Plan) that vested and settled upon achievement of the performance condition on May 26, 2026.
[F2]Includes 40,000 shares of common stock issuable upon settlement of a restricted stock unit granted under the 2023 Plan as reported on Form 4 dated February 3, 2026.
[F3]Shares held by The Ram Aiyar Irrevocable Trust, for which the Reporting Person serves as trustee. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

Signature

/s/ Jeffrey Cerio, Attorney-in-fact|2026-05-28

1 file