Alexander Cumbo

CIK 1685994 · View on SEC EDGAR ↗

Insider

First SEC filing: Sept. 30, 2016 · Latest: June 12, 2026

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Insider at

Insider transactions

0 buys (P) 4 sells (S) Net: $-983,959 + 76 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

76 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
Feb. 18, 2026 SLDB S 16,644 $5.82 $96,868 235,405 Direct -6.60% Disposed 66.8% (price as of 2026-08-19)
Feb. 4, 2026 SLDB S 48,913 $6.44 $315,000 222,018 Direct -18.05% Disposed 50.7% (price as of 2026-08-19)
Feb. 2, 2026 SLDB S 80,258 $6.44 $516,862 270,931 Direct -22.85% Disposed 50.7% (price as of 2026-08-19)
Dec. 3, 2025 SLDB S 10,808 $5.11 $55,229 81,388 Direct -11.72% Disposed 89.9% (price as of 2026-08-19)
Feb. 14, 2025 SLDB S 11,365 $3.96 $45,005 60,717 Direct -15.77% Disposed 145.1% (price as of 2026-08-19)
Dec. 3, 2024 SLDB S 11,114 $5.60 $62,238 38,484 Direct -22.41% Disposed 73.3% (price as of 2026-08-19)
Dec. 4, 2023 SLDB S 10b5-1 11,757 $2.77 $32,567 17,439 Direct -40.27% Disposed 250.4% (price as of 2026-08-19)
Dec. 13, 2019 SRPT S 10b5-1 9,294 $125.50 $1,166,397 1,867 Direct -83.27% Disposed -84.4% (price as of 2026-08-19)
Dec. 13, 2019 SRPT S 10b5-1 32,706 $125.50 $4,104,603 11,161 Direct -74.56% Disposed -84.4% (price as of 2026-08-19)
Feb. 1, 2019 SRPT S 10b5-1 15,000 $140.00 $2,100,000 15,266 Direct -49.56% Disposed -86.0% (price as of 2026-08-19)
July 9, 2018 SRPT S 10b5-1 11,914 $137.32 $1,636,030 28,766 Direct -29.29% Disposed -85.7% (price as of 2026-08-19)
July 9, 2018 SRPT S 10b5-1 9,944 $137.32 $1,365,510 28,766 Direct -25.69% Disposed -85.7% (price as of 2026-08-19)
July 9, 2018 SRPT S 10b5-1 11,924 $137.32 $1,637,404 28,766 Direct -29.30% Disposed -85.7% (price as of 2026-08-19)
July 20, 2017 SRPT S 10b5-1 3,418 $41.00 $140,138 16,875 Direct -16.84% Disposed -52.2% (price as of 2026-08-19)
July 20, 2017 SRPT S 10b5-1 2,500 $41.00 $102,500 20,293 Direct -10.97% Disposed -52.2% (price as of 2026-08-19)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date Ticker Security Underlying Exercise price Expiration Shares A/D
June 11, 2026 VOR Stock option (right to buy) Common Stock (56,345) $14.09 June 10, 2036 56,345 Acquired
June 5, 2026 CLYM Stock Option (Right to Buy) Common Stock (40,000) $10.55 June 4, 2036 40,000 Acquired
Feb. 13, 2026 SLDB Restricted Stock Units Common Stock (30,301) — — 30,031 Disposed
Jan. 31, 2026 SLDB Restricted Stock Units Common Stock (100,400) — — 100,400 Disposed
Jan. 29, 2026 SLDB Restricted Stock Units Common Stock (169,401) — — 169,401 Acquired
Jan. 29, 2026 SLDB Employee Stock Option (Right to Buy) Common Stock (509,850) $6.60 Jan. 29, 2036 509,850 Acquired
Jan. 29, 2026 SLDB Restricted Stock Units Common Stock (254,900) — — 254,900 Acquired
Jan. 29, 2026 SLDB Performance Stock Units Common Stock (169,401) — — 169,401 Disposed
Dec. 2, 2025 SLDB Restricted Stock Units Common Stock (28,612) — — 28,612 Disposed
Aug. 14, 2025 SLDB Restricted Stock Units Common Stock (168,750) — — 168,750 Acquired
Aug. 14, 2025 SLDB Employee Stock Option (Right to Buy) Common Stock (337,500) $6.17 Aug. 14, 2035 337,500 Acquired
June 4, 2025 CLYM Stock Option (Right to Buy) Common Stock (40,000) $1.29 June 3, 2035 40,000 Acquired
March 28, 2025 CLYM Stock Option (Right to Buy) Common Stock (80,000) $1.28 March 27, 2035 80,000 Acquired
Feb. 13, 2025 SLDB Restricted Stock Units Common Stock (30,301) — — 30,031 Disposed
Jan. 31, 2025 SLDB Restricted Stock Units Common Stock (401,600) — — 401,600 Acquired
Dec. 2, 2024 SLDB Restricted Stock Units Common Stock (28,612) — — 28,612 Disposed
Feb. 13, 2024 SLDB Restricted Stock Units Common Stock (120,125) — — 120,125 Acquired
Feb. 13, 2024 SLDB Employee Stock Option (Right to Buy) Common Stock (240,250) $7.85 Feb. 13, 2034 240,250 Acquired
Dec. 2, 2023 SLDB Restricted Stock Units Common Stock (28,612) — — 28,612 Disposed
Dec. 2, 2022 SLDB Stock Option (Right to Buy) Common Stock (228,900) $6.77 Dec. 2, 2032 228,900 Acquired
Dec. 2, 2022 SLDB Restricted Stock Units Common Stock (114,449) — — 114,449 Acquired
Feb. 28, 2020 SRPT Stock option (right to buy) Common Stock (37,500) $114.47 Feb. 28, 2030 37,500 Acquired
Dec. 13, 2019 SRPT Stock option (right to buy) Common Stock (26,084) $26.24 Jan. 2, 2023 26,084 Disposed
Dec. 13, 2019 SRPT Stock option (right to buy) Common Stock (3,895) $13.71 Feb. 28, 2026 3,895 Disposed
Dec. 13, 2019 SRPT Stock option (right to buy) Common Stock (2,727) $13.71 Feb. 28, 2026 2,727 Disposed
March 4, 2019 SRPT Stock option (right to buy) Common Stock (45,000) $145.48 March 4, 2029 45,000 Acquired
Feb. 1, 2019 SRPT Stock Option (right to buy) Common Stock (5,250) $26.24 Jan. 2, 2023 5,250 Disposed
Feb. 1, 2019 SRPT Stock Option (right to buy) Common Stock (2,250) $13.90 Feb. 27, 2025 2,250 Disposed
July 9, 2018 SRPT Stock option (right to buy) Common Stock (11,914) $13.90 Feb. 27, 2025 11,914 Disposed
July 9, 2018 SRPT Stock option (right to buy) Common Stock (9,944) $13.71 Feb. 28, 2026 9,944 Disposed
July 9, 2018 SRPT Stock option (right to buy) Common Stock (11,924) $13.71 Feb. 28, 2026 11,924 Disposed
May 22, 2018 SRPT Restricted Stock Units Common Stock (4,876) — — 4,876 Disposed
March 15, 2018 SRPT Stock option (right to buy) Common Stock (1,370) $26.24 Jan. 2, 2023 1,370 Disposed
March 15, 2018 SRPT Stock option (right to buy) Common Stock (835) $13.90 Feb. 27, 2025 835 Disposed
March 15, 2018 SRPT Stock option (right to buy) Common Stock (54) $13.71 Feb. 28, 2026 54 Disposed
March 15, 2018 SRPT Stock option (right to buy) Common Stock (241) $13.71 Feb. 28, 2026 241 Disposed
March 5, 2018 SRPT Stock option (right to buy) Common Stock (70,000) $71.45 March 5, 2028 70,000 Acquired
Aug. 3, 2017 SRPT Restricted Stock Units Common Stock (9,752) — — 9,752 Disposed
July 20, 2017 SRPT Non-Qualified Stock Options (right to buy) Common Stock (2,500) $13.71 Feb. 28, 2026 2,500 Disposed
May 19, 2017 SRPT Stock Option (right to buy) Common Stock (40,000) $34.64 May 19, 2027 40,000 Acquired
March 10, 2017 SRPT Incentive Stock Option (right to buy) Common Stock (4,924) $32.63 March 10, 2027 4,924 Acquired
March 10, 2017 SRPT Non-Qualified Stock Option (right to buy) Common Stock (22,576) $32.63 March 10, 2027 22,576 Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 14 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date Ticker Security Shares Ownership
Sept. 30, 2016 SRPT Common Stock 20,293 Direct
Sept. 30, 2016 SRPT Incentive Stock Options (right to buy)→ Common Stock (12,785) 12,785 Direct
Sept. 30, 2016 SRPT Non-Qualified Stock Options (right to buy)→ Common Stock (52,215) 52,215 Direct
Sept. 30, 2016 SRPT Incentive Stock Options (right to buy)→ Common Stock (1,845) 1,845 Direct
Sept. 30, 2016 SRPT Non-Qualified Stock Options (right to buy)→ Common Stock (16,155) 16,155 Direct
Sept. 30, 2016 SRPT Incentive Stock Options (right to buy)→ Common Stock (896) 896 Direct
Sept. 30, 2016 SRPT Non-Qualified Stock Options (right to buy)→ Common Stock (20,604) 20,604 Direct
Sept. 30, 2016 SRPT Incentive Stock Options (right to buy)→ Common Stock (5,836) 5,836 Direct
Sept. 30, 2016 SRPT Non-Qualified Stock Options (right to buy)→ Common Stock (14,164) 14,164 Direct
Sept. 30, 2016 SRPT Incentive Stock Options (right to buy)→ Common Stock (6,161) 6,161 Direct
Sept. 30, 2016 SRPT Non-Qualified Stock Options (right to buy)→ Common Stock (13,839) 13,839 Direct
Sept. 30, 2016 SRPT Non-Qualified Stock Options (right to buy)→ Common Stock (14,400) 14,400 Direct
Sept. 30, 2016 SRPT Incentive Stock Options (right to buy)→ Common Stock (1,726) 1,726 Direct
Sept. 30, 2016 SRPT Non-Qualified Stock Options (right to buy)→ Common Stock (18,274) 18,274 Direct

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

SRPT

Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2018 $428,231 — — $2,412,445 $261,545 — $12,937 $3,115,158
2017 $353,558 — $636,416 $1,103,231 $212,800 — $11,779 $2,317,783
2016 $314,175 — $846,551 $477,044 $152,400 — $11,579 $1,801,749

SLDB

Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2025 $650,988 $449,182 — — — — $12,600 $5,223,442
2024 $608,400 $334,620 — — — — $12,420 $4,869,909
2023 $585,000 $321,750 — — — — $11,800 $918,630

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.