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Korro Bio, Inc.

KRRO Net buying
CIK 0001703647 #3970 in the set updated 17 Sep 2026
Bought (120 mo)
$36.13M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$25.22M
$5.32M on a plan · $9.50M straight out of an exercise
Sold at will
$10.41M
117 of 274 sales
Net
+$10.91M
+$25.73M against sales at will

By person

33 insiders · 319 transactions
Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
Lucchino David L.
Director
—
$11.62M (98) scheduled
−$11.62M
22,150
0.1504%
$312.76K
—
FORMELA JEAN FRANCOIS
Director
—
$5.16M (24) scheduled
−$5.16M
273,703
1.86%
$3.86M
—
Loose Christopher R.
Chief Scientific Officer
—
$4.59M (60)
−$4.59M
183,650
1.25%
$2.59M
−45.4%
Flynn James E
10% owner
$4.00M (1)
—
+$4.00M
1,231,434
8.36%
$17.39M
—
BASKETT FOREST
10% owner
$3.30M (2)
—
+$3.30M
1,297,893
8.81%
$18.33M
+21.0%
Chang Carmen
10% owner
$3.30M (2)
—
+$3.30M
1,297,893
8.81%
$18.33M
+21.0%
Florence Anthony A. Jr.
10% owner
$3.30M (2)
—
+$3.30M
1,297,893
8.81%
$18.33M
+21.0%
Makhzoumi Mohamad
10% owner
$3.30M (2)
—
+$3.30M
1,297,893
8.81%
$18.33M
+21.0%
Mathers Edward T
10% owner
$3.30M (2)
—
+$3.30M
1,297,893
8.81%
$18.33M
+21.0%
New Enterprise Associates 17, L.P. entity
10% owner
$3.30M (2)
—
+$3.30M
1,297,893
8.81%
$18.33M
+21.0%
SANDELL SCOTT D
10% owner
$3.30M (2)
—
+$3.30M
1,297,893
8.81%
$18.33M
+21.0%
Walker Paul Edward
10% owner
$3.30M (2)
—
+$3.30M
1,297,893
8.81%
$18.33M
+21.0%
Yang Rick
10% owner
$3.30M (2)
—
+$3.30M
1,297,893
8.81%
$18.33M
+21.0%
MARCUS JOEL S
Director
$999.99K (1)
$2.32M (14)
−$1.32M
1,318,846
8.96%
$18.62M
+289.9%
Atlas Venture Opportunity Fund II, L.P. entity
10% owner
$999.99K (1)
—
+$999.99K
195,074
1.32%
$2.75M
+10.1%
Agarwal Vineet
Chief Financial Officer
—
$855.53K (12) scheduled
−$855.53K
0
0.0000%
$0.00
—
Aiyar Ram
President and CEO
—
$259.59K (2)
−$259.59K
73,659
0.5002%
$1.04M
—
COHEN MARC A
Director
$250.00K (1)
—
+$250.00K
623,677
4.24%
$8.81M
+760.5%
Dolan Oliver
Senior Vice President, Finance
—
$136.07K (4) scheduled
−$136.07K
16,241
0.1103%
$229.32K
—
Lynx1 Capital Management LP entity
10% owner
$84.32K (3)
—
+$84.32K
1,544,980
10.49%
$21.82M
+0.5%
Cerio Jeffrey
General Counsel
—
$71.58K (1)
−$71.58K
41,793
0.2838%
$590.12K
—
McCubbin Quentin
Chief Manufacturing Officer
$88.50K (1)
$37.44K (6)
+$51.06K
38,340
0.2604%
$541.36K
+472.2%
Vincent Loic A
Chief Scientific Officer
—
$37.02K (1)
−$37.02K
25,797
0.1752%
$364.25K
—
Chappell Todd
Chief Operating Officer
—
$34.31K (1)
−$34.31K
24,464
0.1661%
$345.43K
—
Arnold Wendy S
Chief People Officer
—
$32.36K (6)
−$32.36K
21,186
0.1439%
$299.15K
+684.1%
PFREUNDSCHUH PETER P.
Chief Financial Officer
—
$27.61K (5)
−$27.61K
8,927
0.0606%
$126.05K
+1,098%
LeBel Carl
Chief Development Officer
—
$25.37K (6)
−$25.37K
26,343
0.1789%
$371.96K
+389.4%
Mitrano Richard J.
VP Finance & Operations
$1.50K (1)
$7.54K (34) scheduled
−$6.05K
52,489
0.3564%
$741.14K
+19.1%
Behbahani Ali
Director
—
—
—
1,297,893
8.81%
$18.33M
—
Alexandria Venture Investments, LLC entity
10% owner
—
—
—
956,175
6.49%
$13.50M
—
LANGER ROBERT
Director
—
—
—
240,021
1.63%
$3.39M
−19.2%
BARBERICH TIMOTHY J
Director
—
—
—
182,739
1.24%
$2.58M
+946.2%
Bermingham Nessan
Director
—
—
—
35,114
0.2385%
$495.81K
—

Individual transactions

101
Insider
Date
Role
Action
Shares
Price
Amount
FORMELA JEAN FRANCOIS
14 Sep 2026
Director
Sold on a plan indirect
6,602
$14.12
$93.22K
FORMELA JEAN FRANCOIS
14 Sep 2026
Director
Sold on a plan indirect
31,888
$14.12
$450.26K
FORMELA JEAN FRANCOIS
11 Sep 2026
Director
Sold on a plan indirect
1,750
$13.99
$24.48K
FORMELA JEAN FRANCOIS
11 Sep 2026
Director
Sold on a plan indirect
8,450
$13.99
$118.22K
Dolan Oliver
11 Sep 2026
Senior Vice President, Finance
Sold on a plan
5
$13.72
$68.58
Dolan Oliver
9 Sep 2026
Senior Vice President, Finance
Sold on a plan
6
$13.60
$81.62
Dolan Oliver
8 Sep 2026
Senior Vice President, Finance
Sold on a plan
7,347
$13.51
$99.29K
FORMELA JEAN FRANCOIS
26 Aug 2026
Director
Sold on a plan indirect
51
$13.96
$711.96
FORMELA JEAN FRANCOIS
26 Aug 2026
Director
Sold on a plan indirect
249
$13.96
$3.48K
FORMELA JEAN FRANCOIS
19 Aug 2026
Director
Sold on a plan indirect
4,884
$14.00
$68.38K
FORMELA JEAN FRANCOIS
19 Aug 2026
Director
Sold on a plan indirect
23,584
$14.00
$330.18K
FORMELA JEAN FRANCOIS
11 Aug 2026
Director
Sold on a plan indirect
368
$13.96
$5.14K
FORMELA JEAN FRANCOIS
11 Aug 2026
Director
Sold on a plan indirect
1,775
$13.96
$24.78K
FORMELA JEAN FRANCOIS
6 Jul 2026
Director
Sold on a plan indirect
8,506
$13.96
$118.74K
FORMELA JEAN FRANCOIS
6 Jul 2026
Director
Sold on a plan indirect
817
$13.96
$11.41K
FORMELA JEAN FRANCOIS
2 Jul 2026
Director
Sold on a plan indirect
14,745
$14.03
$206.87K
FORMELA JEAN FRANCOIS
2 Jul 2026
Director
Sold on a plan indirect
85,955
$14.03
$1.21M
FORMELA JEAN FRANCOIS
24 Jun 2026
Director
Sold on a plan indirect
114
$14.98
$1.71K
FORMELA JEAN FRANCOIS
24 Jun 2026
Director
Sold on a plan indirect
6,979
$14.60
$101.89K
FORMELA JEAN FRANCOIS
24 Jun 2026
Director
Sold on a plan indirect
666
$14.98
$9.98K
FORMELA JEAN FRANCOIS
24 Jun 2026
Director
Sold on a plan indirect
40,679
$14.60
$593.91K
FORMELA JEAN FRANCOIS
23 Jun 2026
Director
Sold on a plan indirect
17,426
$14.25
$248.32K
FORMELA JEAN FRANCOIS
23 Jun 2026
Director
Sold on a plan indirect
101,579
$14.25
$1.45M
FORMELA JEAN FRANCOIS
22 Jun 2026
Director
Sold on a plan indirect
580
$13.95
$8.09K
FORMELA JEAN FRANCOIS
22 Jun 2026
Director
Sold on a plan indirect
3,382
$13.95
$47.18K
FORMELA JEAN FRANCOIS
28 May 2026
Director
Sold on a plan indirect
419
$13.95
$5.85K
FORMELA JEAN FRANCOIS
28 May 2026
Director
Sold on a plan indirect
2,441
$13.95
$34.05K
Lucchino David L.
21 Aug 2023
President and CEO
Sold on a plan
3,057
$0.50
$1.53K
Mitrano Richard J.
21 Aug 2023
VP Finance & Operations
Sold on a plan
237
$0.53
$125.61
Lucchino David L.
18 Aug 2023
President and CEO
Sold on a plan
2,865
$0.60
$1.72K
Mitrano Richard J.
18 Aug 2023
VP Finance & Operations
Sold on a plan
227
$0.63
$143.01
Lucchino David L.
17 Aug 2023
President and CEO
Sold on a plan
2,733
$0.63
$1.72K
Mitrano Richard J.
17 Aug 2023
VP Finance & Operations
Sold on a plan
230
$0.62
$142.60
Lucchino David L.
16 Aug 2023
President and CEO
Sold on a plan
2,895
$0.65
$1.88K
Mitrano Richard J.
16 Aug 2023
VP Finance & Operations
Sold on a plan
234
$0.67
$156.78
Lucchino David L.
15 Aug 2023
President and CEO
Sold on a plan
2,629
$0.67
$1.76K
Mitrano Richard J.
15 Aug 2023
VP Finance & Operations
Sold on a plan
228
$0.65
$148.20
Lucchino David L.
14 Aug 2023
President and CEO
Sold on a plan
2,881
$0.63
$1.82K
Mitrano Richard J.
14 Aug 2023
VP Finance & Operations
Sold on a plan
238
$0.64
$152.32
Mitrano Richard J.
11 Aug 2023
VP Finance & Operations
Sold on a plan
240
$0.64
$153.60
Lucchino David L.
11 Aug 2023
President and CEO
Sold on a plan
2,733
$0.67
$1.83K
Mitrano Richard J.
10 Aug 2023
VP Finance & Operations
Sold on a plan
247
$0.64
$158.08
Lucchino David L.
10 Aug 2023
President and CEO
Sold on a plan
2,790
$0.68
$1.90K
Mitrano Richard J.
9 Aug 2023
VP Finance & Operations
Sold on a plan
238
$0.66
$157.08
Lucchino David L.
9 Aug 2023
President and CEO
Sold on a plan
2,798
$0.67
$1.87K
Mitrano Richard J.
8 Aug 2023
VP Finance & Operations
Sold on a plan
241
$0.67
$161.47
Lucchino David L.
8 Aug 2023
President and CEO
Sold on a plan
2,810
$0.69
$1.94K
Mitrano Richard J.
7 Aug 2023
VP Finance & Operations
Sold on a plan
235
$0.69
$162.15
Lucchino David L.
7 Aug 2023
President and CEO
Sold on a plan
2,857
$0.68
$1.94K
Mitrano Richard J.
4 Aug 2023
VP Finance & Operations
Sold on a plan
220
$0.67
$147.40
Lucchino David L.
4 Aug 2023
President and CEO
Sold on a plan
2,550
$0.69
$1.76K
Mitrano Richard J.
3 Aug 2023
VP Finance & Operations
Sold on a plan
232
$0.56
$129.92
Lucchino David L.
3 Aug 2023
President and CEO
Sold on a plan
2,679
$0.59
$1.58K
Mitrano Richard J.
2 Aug 2023
VP Finance & Operations
Sold on a plan
231
$0.49
$113.19
Lucchino David L.
2 Aug 2023
President and CEO
Sold on a plan
2,587
$0.52
$1.35K
Mitrano Richard J.
1 Aug 2023
VP Finance & Operations
Sold on a plan
238
$0.48
$114.24
Lucchino David L.
1 Aug 2023
President and CEO
Sold on a plan
2,799
$0.49
$1.37K
Mitrano Richard J.
31 Jul 2023
VP Finance & Operations
Sold on a plan
222
$0.50
$111.00
Lucchino David L.
31 Jul 2023
President and CEO
Sold on a plan
2,676
$0.50
$1.34K
Loose Christopher R.
28 Jul 2023
Chief Scientific Officer
Sold on a plan
1,344
$0.46
$618.24
Lucchino David L.
28 Jul 2023
President and CEO
Sold on a plan
2,647
$0.47
$1.24K
Mitrano Richard J.
28 Jul 2023
VP Finance & Operations
Sold on a plan
223
$0.47
$104.81
Loose Christopher R.
27 Jul 2023
Chief Scientific Officer
Sold on a plan
1,373
$0.53
$727.69
Lucchino David L.
27 Jul 2023
President and CEO
Sold on a plan
2,791
$0.51
$1.42K
Mitrano Richard J.
27 Jul 2023
VP Finance & Operations
Sold on a plan
227
$0.53
$120.31
Lucchino David L.
26 Jul 2023
President and CEO
Sold on a plan
2,609
$0.52
$1.36K
Loose Christopher R.
26 Jul 2023
Chief Scientific Officer
Sold on a plan
1,329
$0.51
$677.79
Mitrano Richard J.
26 Jul 2023
VP Finance & Operations
Sold on a plan
222
$0.53
$117.66
Lucchino David L.
25 Jul 2023
President and CEO
Sold on a plan
2,803
$0.50
$1.40K
Loose Christopher R.
25 Jul 2023
Chief Scientific Officer
Sold on a plan
1,390
$0.50
$695.00
Mitrano Richard J.
25 Jul 2023
VP Finance & Operations
Sold on a plan
234
$0.50
$117.00
Mitrano Richard J.
24 Jul 2023
VP Finance & Operations
Sold on a plan
234
$0.56
$131.04
Lucchino David L.
24 Jul 2023
President and CEO
Sold on a plan
2,887
$0.54
$1.56K
Loose Christopher R.
24 Jul 2023
Chief Scientific Officer
Sold on a plan
1,438
$0.54
$776.52
Mitrano Richard J.
21 Jul 2023
VP Finance & Operations
Sold on a plan
223
$0.61
$136.25
Lucchino David L.
21 Jul 2023
President and CEO
Sold on a plan
2,663
$0.61
$1.62K
Loose Christopher R.
21 Jul 2023
Chief Scientific Officer
Sold on a plan
1,333
$0.61
$813.13
Mitrano Richard J.
20 Jul 2023
VP Finance & Operations
Sold on a plan
229
$0.64
$146.56
Lucchino David L.
20 Jul 2023
President and CEO
Sold on a plan
2,710
$0.64
$1.73K
Loose Christopher R.
20 Jul 2023
Chief Scientific Officer
Sold on a plan
1,361
$0.64
$871.04
Mitrano Richard J.
19 Jul 2023
VP Finance & Operations
Sold on a plan
228
$0.63
$143.64
Lucchino David L.
19 Jul 2023
President and CEO
Sold on a plan
2,646
$0.65
$1.72K
Loose Christopher R.
19 Jul 2023
Chief Scientific Officer
Sold on a plan
1,335
$0.65
$867.75
Loose Christopher R.
18 Jul 2023
Chief Scientific Officer
Sold on a plan
1,484
$0.56
$831.04
Lucchino David L.
18 Jul 2023
President and CEO
Sold on a plan
2,968
$0.56
$1.66K
Mitrano Richard J.
18 Jul 2023
VP Finance & Operations
Sold on a plan
249
$0.56
$139.44
Loose Christopher R.
17 Jul 2023
Chief Scientific Officer
Sold on a plan
1,415
$0.67
$948.05
Lucchino David L.
17 Jul 2023
President and CEO
Sold on a plan
2,775
$0.68
$1.89K
Mitrano Richard J.
17 Jul 2023
VP Finance & Operations
Sold on a plan
244
$0.65
$158.60
Mitrano Richard J.
14 Jul 2023
VP Finance & Operations
Sold on a plan
148
$0.60
$88.80
Lucchino David L.
14 Jul 2023
President and CEO
Sold on a plan
1,815
$0.59
$1.07K
Loose Christopher R.
14 Jul 2023
Chief Scientific Officer
Sold on a plan
906
$0.59
$534.54
Mitrano Richard J.
13 Jul 2023
VP Finance & Operations
Sold on a plan
227
$0.39
$88.53
Lucchino David L.
13 Jul 2023
President and CEO
Sold on a plan
2,646
$0.39
$1.03K
Loose Christopher R.
13 Jul 2023
Chief Scientific Officer
Sold on a plan
1,329
$0.39
$518.31
Mitrano Richard J.
12 Jul 2023
VP Finance & Operations
Sold on a plan
220
$0.40
$88.00
Lucchino David L.
12 Jul 2023
President and CEO
Sold on a plan
2,649
$0.39
$1.03K
Loose Christopher R.
12 Jul 2023
Chief Scientific Officer
Sold on a plan
1,335
$0.39
$520.65
Mitrano Richard J.
11 Jul 2023
VP Finance & Operations
Sold on a plan
228
$0.37
$84.36
Lucchino David L.
11 Jul 2023
President and CEO
Sold on a plan
2,731
$0.37
$1.01K
Loose Christopher R.
11 Jul 2023
Chief Scientific Officer
Sold on a plan
1,363
$0.37
$504.31
Showing 250 of 319 transactions. The figures above use every one of them.

What was left out

Form 4 filings counted 297
Amendments (4/A) skipped 7
Filings about a different issuer 0
Unreadable filings 0
Joint filings 6
Sales on a Rule 10b5-1 plan 101
Sales straight out of an exercise 56
Sales at will 117
Transactions with no price 0
Shares from compensation/vesting 7,033,335
Sales filed before the plan box existed 100
History held since 2 Oct 2019