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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
Ganot Ilan
5 Jan 2026
Director
Sell indirect
1,053
$5.43
$5.72K
Ganot Ilan
10 Nov 2025
Director
Sell
3,278
$4.12
$13.51K
Brooks Gabriel
20 Oct 2025
Chief Medical Officer
Sell
2,895
$5.96
$17.25K
Tan Kevin
10 Jan 2025
CFO & Treasurer
Sell
4,073
$3.89
$15.85K
Ganot Ilan
6 Jan 2025
Director
Sell indirect
1,056
$4.31
$4.55K
Herzich Paul
3 Dec 2024
Chief Technology Officer
Sell
2,777
$5.60
$15.55K
Howton David T
3 Dec 2024
Chief Operating Officer
Sell
5,072
$5.60
$28.40K
Cumbo Alexander
3 Dec 2024
President and CEO
Sell
11,114
$5.60
$62.24K
Hanrahan Jessie
3 Dec 2024
Chief Regulatory Officer
Sell
4,610
$5.60
$25.82K
Brooks Gabriel
21 Oct 2024
Chief Medical Officer
Sell
2,923
$6.50
$19.00K
Ganot Ilan
29 Jan 2024
Director
Sell indirect
139
$7.99
$1.11K
Marlowe Jennifer
4 Dec 2023
CSO
Sell
4,890
$2.77
$13.52K
Hanrahan Jessie
4 Dec 2023
Chief Regulatory Officer
Sell
4,879
$2.78
$13.56K
Herzich Paul
4 Dec 2023
Chief Technology Officer
Sell
2,968
$2.77
$8.23K
Howton David T
4 Dec 2023
Chief Operating Officer
Sell
5,367
$2.78
$14.92K
Cumbo Alexander
4 Dec 2023
President and CEO
Sell
11,757
$2.77
$32.52K
Schneider Joel Solomon Zev
14 Mar 2022
Chief Operating Officer
Sell
15,272
$1.10
$16.80K
Schneider Joel Solomon Zev
14 Mar 2022
Chief Operating Officer
Sell
15,232
$1.10
$16.76K
Morris Carl Ashley
14 Mar 2022
Chief Scientific Officer
Sell
11,396
$1.10
$12.54K
Morris Carl Ashley
14 Mar 2022
Chief Scientific Officer
Sell
11,269
$1.10
$12.40K
Ganot Ilan
10 Feb 2022
CEO & President
Sell indirect
463
$1.12
$518.65
Schneider Joel Solomon Zev
12 Mar 2021
Chief Operating Officer
Sell
11,699
$8.84
$103.45K
Schneider Joel Solomon Zev
12 Mar 2021
Chief Operating Officer
Sell
11,699
$8.84
$103.47K
Morris Carl Ashley
12 Mar 2021
Chief Scientific Officer
Sell
11,699
$8.85
$103.49K
Morris Carl Ashley
12 Mar 2021
Chief Scientific Officer
Sell
11,699
$8.84
$103.46K
Ganot Ilan
12 Feb 2021
CEO & President
Sell indirect
457
$7.66
$3.50K
Ganot Ilan
28 Jan 2021
CEO & President
Sell
10,713
$6.14
$65.78K
Morris Carl Ashley
28 Jan 2021
Chief Scientific Officer
Sell
3,459
$6.14
$21.24K
Ziolkowski Jennifer Lynn
28 Jan 2021
CFO, Treasurer & Asst. Secy
Sell
3,473
$6.14
$21.33K
Schneider Joel Solomon Zev
28 Jan 2021
Chief Technology Officer
Sell
3,443
$6.14
$21.15K
Ganot Ilan
13 Aug 2020
CEO & President
Sell indirect
299
$2.44
$729.83
Ganot Ilan
28 Jul 2020
CEO & President
Sell
11,124
$2.42
$26.91K
HERSCHA LYNETTE
28 Jul 2020
Chief Legal Officer
Sell
5,141
$2.42
$12.44K
Ziolkowski Jennifer Lynn
28 Jul 2020
CFO, Treasurer & Asst. Secy
Sell
3,591
$2.42
$8.69K
Morris Carl Ashley
28 Jul 2020
Chief Scientific Officer
Sell
3,591
$2.42
$8.69K
Schneider Joel Solomon Zev
28 Jul 2020
Chief Technology Officer
Sell
4,041
$2.42
$9.78K
Zarur Juan Andrey
8 May 2019
Director
Sell indirect
8,000
$10.00
$80.04K
Boxer Capital, LLC
28 Mar 2019
10% owner
Sell
60,000
$9.53
$571.80K
Boxer Capital, LLC
27 Mar 2019
10% owner
Sell
115,000
$9.60
$1.10M
Boxer Capital, LLC
26 Mar 2019
10% owner
Sell
275,000
$10.08
$2.77M
Arnold Matthew Bennett
14 Jan 2019
Director
Sell
3,300
$32.20
$106.26K
Arnold Matthew Bennett
14 Jan 2019
Director
Sell
1,700
$31.60
$53.72K
Arnold Matthew Bennett
7 Jan 2019
Director
Sell
5,000
$30.08
$150.41K
Amorrortu Pedro Alvaro
4 Jan 2019
Chief Operating Officer
Sell
9,000
$30.07
$270.62K
Quiroz Jorge Armando
3 Dec 2018
Chief Medical Officer
Sell
1,370
$32.24
$44.17K
Quiroz Jorge Armando
3 Dec 2018
Chief Medical Officer
Sell
31,426
$31.41
$987.15K
Quiroz Jorge Armando
3 Dec 2018
Chief Medical Officer
Sell
6,154
$30.21
$185.90K
Quiroz Jorge Armando
3 Dec 2018
Chief Medical Officer
Sell
1,200
$29.94
$35.92K
Amorrortu Pedro Alvaro
3 Dec 2018
Chief Operating Officer
Sell
300
$32.38
$9.71K
Amorrortu Pedro Alvaro
3 Dec 2018
Chief Operating Officer
Sell
5,693
$31.44
$179.00K
Amorrortu Pedro Alvaro
3 Dec 2018
Chief Operating Officer
Sell
3,007
$30.20
$90.82K
Zarur Juan Andrey
16 Nov 2018
Director
Sell
100
$35.00
$3.50K
Quiroz Jorge Armando
16 Nov 2018
Chief Medical Officer
Sell
100
$34.90
$3.49K
Amorrortu Pedro Alvaro
15 Nov 2018
Chief Operating Officer
Sell
4,300
$31.08
$133.63K
Amorrortu Pedro Alvaro
15 Nov 2018
Chief Operating Officer
Sell
4,700
$30.61
$143.85K
Schneider Joel Solomon Zev
15 Nov 2018
See Remarks
Sell
8,542
$31.10
$265.62K
Schneider Joel Solomon Zev
15 Nov 2018
See Remarks
Sell
13,448
$30.68
$412.56K
Ganot Ilan
15 Nov 2018
CEO & President
Sell
19,100
$31.06
$593.32K
Ganot Ilan
15 Nov 2018
CEO & President
Sell
30,900
$30.70
$948.61K

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