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Solid Biosciences Inc.

SLDB Net buying
CIK 0001707502 #2572 in the set updated 19 Sep 2026
Bought (120 mo)
$128.13M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$12.94M
$2.77M on a plan · $60.17K straight out of an exercise
Sold at will
$10.11M
59 of 100 sales
Net
+$115.19M
+$118.02M against sales at will

By person

28 insiders · 114 transactions
2.1×

Alexander Cumbo holds only 2.1 times base salary in stock. $1.37M of shares against $650.99K in salary for 2025.

Salary from the company's own proxy. The shares are what Alexander Cumbo last reported holding, valued at $5.82, the price Common Stock was last bought or sold at on the open market here, on 18 Feb 2026.

Insider
Role
Bought
Sold
Net
Holding
Worth
Change
PERCEPTIVE ADVISORS LLC entity
Director
$83.68M (6)
+$83.68M
25,246,091
$147.02M
+577.2%
RA CAPITAL MANAGEMENT, L.P. entity
10% owner
$17.69M (2)
+$17.69M
15,772,503
$91.85M
+82.6%
Shah Rajeev M.
Director
$16.00M (1)
+$16.00M
13,281,046
$77.34M
+143.2%
Koppel Adam
Director
$4.80M (1)
+$4.80M
11,964,500
$69.67M
+282.2%
Boxer Capital, LLC entity
10% owner
$4.45M (3)
−$4.45M
3,473,272
$20.23M
−11.5%
Bain Capital Life Sciences Investors, LLC entity
10% owner
$4.03M (1)
+$4.03M
5,034,582
$29.32M
+60.8%
Adage Capital Management, L.P. entity
10% owner
$1.91M (1)
+$1.91M
4,248,084
$24.74M
+6.3%
Ganot Ilan
Director
$1.76M (21)
−$1.76M
1,002,539
$5.84M
+9.8%
Quiroz Jorge Armando
Chief Medical Officer
$1.26M (5)
−$1.26M
228,092
$1.33M
−15.0%
Cumbo Alexander
President and CEO
$1.12M (7) scheduled
−$1.12M
235,405
$1.37M
+2,259%
Schneider Joel Solomon Zev
Chief Operating Officer
$949.58K (8)
−$949.58K
236,270
$1.38M
+61.1%
Amorrortu Pedro Alvaro
Chief Operating Officer
$827.63K (6)
−$827.63K
158,046
$920.35K
−14.6%
Howton David T
Chief Operating Officer
$498.88K (7) scheduled
−$498.88K
105,077
$611.89K
Tan Kevin
CFO & Treasurer
$390.15K (7) scheduled
−$390.15K
99,422
$578.96K
+434.5%
Hanrahan Jessie
Chief Regulatory Officer
$348.91K (7) scheduled
−$348.91K
74,318
$432.78K
Brooks Gabriel
Chief Medical Officer
$312.81K (6) scheduled
−$312.81K
89,466
$520.99K
+710.0%
Arnold Matthew Bennett
Director
$310.39K (3)
−$310.39K
3,933,429
$22.91M
+15.8%
Herzich Paul
Chief Technology Officer
$308.50K (7) scheduled
−$308.50K
72,638
$422.99K
+720.5%
Morris Carl Ashley
Chief Scientific Officer
$265.11K (7)
−$265.11K
19,760
$115.07K
Zarur Juan Andrey
Director
$83.54K (2)
−$83.54K
701,294
$4.08M
−1.1%
Ziolkowski Jennifer Lynn
CFO, Treasurer & Asst. Secy
$30.01K (2)
−$30.01K
335,636
$1.95M
+97.8%
Kahn Clare
Director
$18.37K (2)
+$18.37K
2,960
$17.24K
Marlowe Jennifer
CSO
$13.52K (1)
−$13.52K
6,998
$40.75K
HERSCHA LYNETTE
Chief Legal Officer
$12.44K (1)
−$12.44K
160,859
$936.73K
Hayeem Gilad David
10% owner
3,542,746
$20.63M
−1.0%
SMITH IAN F
Director
138,145
$804.46K
Freed Martin I
Director
53,763
$313.08K
Nagendran Sukumar
Director
34,258
$199.49K
+1,613%

No percentages here. This company's share count has moved by a factor of 2.7 over the window, from 39,954,607 to 107,225,238 shares. A split, a merger or a large issue changes what the company is, and a holding measured at one point in that run is not a fraction of it at another.

Insider
Date
Role
Action
Shares
Price
Amount
Tan Kevin
18 Feb 2026
CFO & Treasurer
Sold on a plan
5,404
$5.82
$31.47K
Brooks Gabriel
18 Feb 2026
Chief Medical Officer
Sold on a plan
0
$5.82
$0.00
Howton David T
18 Feb 2026
Chief Operating Officer
Sold on a plan
7,469
$5.82
$43.49K
Herzich Paul
18 Feb 2026
Chief Technology Officer
Sold on a plan
3,616
$5.82
$21.06K
Ganot Ilan
18 Feb 2026
Director
Sold on a plan indirect
2,658
$5.82
$15.48K
Hanrahan Jessie
18 Feb 2026
Chief Regulatory Officer
Sold on a plan
4,134
$5.82
$24.07K
Cumbo Alexander
18 Feb 2026
President and CEO
Sold on a plan
16,644
$5.82
$96.92K
Herzich Paul
4 Feb 2026
Chief Technology Officer
Sold on a plan
10,905
$6.44
$70.25K
Hanrahan Jessie
4 Feb 2026
Chief Regulatory Officer
Sold on a plan
12,348
$6.44
$79.54K
Brooks Gabriel
4 Feb 2026
Chief Medical Officer
Sold on a plan
12,616
$6.44
$81.27K
Tan Kevin
4 Feb 2026
CFO & Treasurer
Sold on a plan
14,783
$6.44
$95.23K
Ganot Ilan
4 Feb 2026
Director
Sold on a plan indirect
7,205
$6.44
$46.41K
Cumbo Alexander
4 Feb 2026
President and CEO
Sold on a plan
48,913
$6.44
$315.09K
Howton David T
4 Feb 2026
Chief Operating Officer
Sold on a plan
18,894
$6.44
$121.71K
Herzich Paul
2 Feb 2026
Chief Technology Officer
Sold on a plan
26,250
$6.44
$168.97K
Howton David T
2 Feb 2026
Chief Operating Officer
Sold on a plan
37,771
$6.44
$243.13K
Brooks Gabriel
2 Feb 2026
Chief Medical Officer
Sold on a plan
28,335
$6.44
$182.39K
Hanrahan Jessie
2 Feb 2026
Chief Regulatory Officer
Sold on a plan
26,535
$6.44
$170.80K
Cumbo Alexander
2 Feb 2026
President and CEO
Sold on a plan
80,258
$6.44
$516.61K
Tan Kevin
2 Feb 2026
CFO & Treasurer
Sold on a plan
26,837
$6.44
$172.75K
Ganot Ilan
28 Jan 2026
Director
Sold on a plan indirect
191
$6.59
$1.26K
Tan Kevin
13 Jan 2026
CFO & Treasurer
Sold on a plan
5,704
$5.27
$30.06K
Herzich Paul
3 Dec 2025
Chief Technology Officer
Sold on a plan
2,701
$5.11
$13.80K
Hanrahan Jessie
3 Dec 2025
Chief Regulatory Officer
Sold on a plan
4,483
$5.11
$22.91K
Cumbo Alexander
3 Dec 2025
President and CEO
Sold on a plan
10,808
$5.11
$55.23K
Howton David T
3 Dec 2025
Chief Operating Officer
Sold on a plan
4,932
$5.11
$25.20K
Ganot Ilan
14 Feb 2025
Director
Sold on a plan indirect
1,711
$3.96
$6.78K
Cumbo Alexander
14 Feb 2025
President and CEO
Sold on a plan
11,365
$3.96
$45.01K
Howton David T
14 Feb 2025
Chief Operating Officer
Sold on a plan
5,561
$3.96
$22.02K
Herzich Paul
14 Feb 2025
Chief Technology Officer
Sold on a plan
2,688
$3.96
$10.64K
Tan Kevin
14 Feb 2025
CFO & Treasurer
Sold on a plan
3,164
$3.96
$12.53K
Brooks Gabriel
14 Feb 2025
Chief Medical Officer
Sold on a plan
3,256
$3.96
$12.89K
Hanrahan Jessie
14 Feb 2025
Chief Regulatory Officer
Sold on a plan
3,079
$3.96
$12.19K
Ganot Ilan
28 Jan 2025
Director
Sold on a plan indirect
144
$3.11
$447.78

What was left out

Form 4 filings counted 334
Amendments (4/A) skipped 6
Filings about a different issuer 0
Unreadable filings 0
Joint filings 29
Sales on a Rule 10b5-1 plan 34
Sales straight out of an exercise 7
Sales at will 59
Transactions with no price 0
Shares from compensation/vesting 31,224,647
Sales filed before the plan box existed 43
History held since 30 Jan 2018