Korro Bio, Inc.
Korro Bio, Inc. (KRRO) Insider Trading
Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.
SEC EDGAR · FMP · KRRO · as of Jun 8, 2026
Activity summary
Buy transactions
19
P-Purchase only
Sell transactions
0
12 Months
Buy/Sell ratio
∞
Buy/Sell (by trades)
Overall sentiment
Korro Bio, Inc. insiders have been net buyers of shares over the past 12 Months, which may signal confidence in the company's outlook.
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only
As of Jun 8, 2026
KRRO insider buying and selling by quarter
KRRO insider selling · KRRO insider buying stocks · quarterly insider activity
Mobile shows last 4Q · Desktop shows full 8Q
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters
As of Jun 8, 2026
Active insiders
Most active in past 12 months · KRRO ceo insider trading
Showing all insiders · Click a card to filter the transactions table below
▸ Aggregated from reportingName · top 5 by trade count (12M) · no extra API
Recent insider transactions
KRRO executive sell shares · KRRO board member insider trading · KRRO insider trading SEC filing
Scroll horizontally to see all columns
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| May 29, 2026 | Aiyar Ram President and CEO · Director | Sale | 15,152 | $197K | Form 4 |
| May 28, 2026 | FORMELA JEAN FRANCOIS Director | Sale | 2,441 | $34K | Form 4 |
| May 28, 2026 | FORMELA JEAN FRANCOIS Director | Sale | 419 | $6K | Form 4 |
| May 26, 2026 | Aiyar Ram President and CEO · Director | Award | 50,000 | $617K | Form 4 |
| Mar 10, 2026 | Yang Rick 10 percent owner | Purchase | 207,100 | $2.30M⚡ | Form 4 |
| Mar 10, 2026 | SANDELL SCOTT D 10 percent owner | Purchase | 207,100 | $2.30M⚡ | Form 4 |
| Mar 10, 2026 | New Enterprise Associates 17, L.P. 10 percent owner | Purchase | 207,100 | $2.30M⚡ | Form 4 |
| Mar 10, 2026 | Chang Carmen 10 percent owner | Purchase | 207,100 | $2.30M⚡ | Form 4 |
| Mar 10, 2026 | Behbahani Ali Director | Award | 207,100 | $2.30M⚡ | Form 4 |
| Mar 10, 2026 | BASKETT FOREST 10 percent owner | Purchase | 207,100 | $2.30M⚡ | Form 4 |
| Mar 10, 2026 | Mathers Edward T 10 percent owner | Purchase | 207,100 | $2.30M⚡ | Form 4 |
| Mar 10, 2026 | Makhzoumi Mohamad 10 percent owner | Purchase | 207,100 | $2.30M⚡ | Form 4 |
| Mar 10, 2026 | Walker Paul Edward 10 percent owner | Purchase | 207,100 | $2.30M⚡ | Form 4 |
| Mar 10, 2026 | Florence Anthony A. Jr. 10 percent owner | Purchase | 207,100 | $2.30M⚡ | Form 4 |
| Feb 2, 2026 | Aiyar Ram President and CEO · Director | Award | 40,000 | — | Form 4 |
| Dec 15, 2025 | Chappell Todd COO | Award | 20,132 | — | Form 4 |
| Dec 15, 2025 | Vincent Loic A Chief Scientific Officer | Award | 21,715 | — | Form 4 |
| Dec 15, 2025 | Cerio Jeffrey General Counsel | Award | 41,902 | — | Form 4 |
| Dec 15, 2025 | Dolan Oliver Senior Vice President, Finance | Award | 21,482 | — | Form 4 |
| Nov 11, 2024 | Agarwal Vineet CFO | Option | 800 | $9K | Form 4 |
| Nov 11, 2024 | Agarwal Vineet CFO | Sale | 800 | $56K | Form 4 |
| Oct 17, 2024 | Agarwal Vineet CFO | Option | 953 | $14K | Form 4 |
| Oct 17, 2024 | Agarwal Vineet CFO | Option | 9,263 | $108K | Form 4 |
| Oct 17, 2024 | Agarwal Vineet CFO | Sale | 2,023 | $145K | Form 4 |
| Oct 17, 2024 | Agarwal Vineet CFO | Sale | 164 | $12K | Form 4 |
Aiyar Ram
President and CEO · Director
Date
May 29
Shares
15,152
Price
$12.98
Value
$197K
Aiyar Ram
President and CEO · Director
Date
May 26
Shares
50,000
Price
$12.33
Value
$617K
Yang Rick
10 percent owner
Date
Mar 10
Shares
207,100
Price
$11.11
Value
$2.30M ⚡
SANDELL SCOTT D
10 percent owner
Date
Mar 10
Shares
207,100
Price
$11.11
Value
$2.30M ⚡
New Enterprise Associates 17, L.P.
10 percent owner
Date
Mar 10
Shares
207,100
Price
$11.11
Value
$2.30M ⚡
Chang Carmen
10 percent owner
Date
Mar 10
Shares
207,100
Price
$11.11
Value
$2.30M ⚡
BASKETT FOREST
10 percent owner
Date
Mar 10
Shares
207,100
Price
$11.11
Value
$2.30M ⚡
Mathers Edward T
10 percent owner
Date
Mar 10
Shares
207,100
Price
$11.11
Value
$2.30M ⚡
Makhzoumi Mohamad
10 percent owner
Date
Mar 10
Shares
207,100
Price
$11.11
Value
$2.30M ⚡
Walker Paul Edward
10 percent owner
Date
Mar 10
Shares
207,100
Price
$11.11
Value
$2.30M ⚡
Florence Anthony A. Jr.
10 percent owner
Date
Mar 10
Shares
207,100
Price
$11.11
Value
$2.30M ⚡
Dolan Oliver
Senior Vice President, Finance
Date
Dec 15
Shares
21,482
Price
—
Value
—
⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar
▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —
About KRRO insider trading
KRRO insider trades
Korro Bio, Inc. (KRRO) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including Aiyar Ram (President and CEO · Director), FORMELA JEAN FRANCOIS (Director), Yang Rick (10 percent owner). Over the past 12 months, 5 insiders have filed transactions with the SEC. KRRO insiders have been primarily buying, which may reflect pre-scheduled Rule 10b5-1 plan executions.
For Korro Bio, Inc.'s institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →
Frequently asked questions
KRRO insider trading · 5 questionsThe insiders of Korro Bio, Inc. (KRRO) include executives and directors such as Aiyar Ram (President and CEO · Director), FORMELA JEAN FRANCOIS (Director), Yang Rick (10 percent owner), among others. Over the past 12 months, 5 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.
▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 8, 2026