Sukumar Nagendran

CIK 1665124 · View on SEC EDGAR ↗

Insider

First SEC filing: Sept. 23, 2020 · Latest: June 11, 2026

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Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 22 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

22 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
May 16, 2023 TSHA P 5,000 $0.68 $3,400 34,226 Direct +17.11% Acquired 842.6% (price as of 2026-08-19)
Feb. 2, 2022 TSHA P 10,000 $8.01 $80,100 29,226 Direct +52.01% Acquired -20.0% (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 10, 2026 SLDB Director Stock Option (Right to Buy) Common Stock (77,500) $6.61 June 10, 2036 77,500 Acquired
June 12, 2025 SLDB Director Stock Option (Right to Buy) Common Stock (77,500) $4.58 June 12, 2035 77,500 Acquired
June 11, 2024 SLDB Director Stock Option (Right to Buy) Common Stock (34,400) $7.51 June 11, 2034 34,400 Acquired
Jan. 2, 2024 TSHA Employee Stock Option (right to buy) Common Stock (863,617) $1.71 Jan. 2, 2034 863,617 Acquired
Dec. 14, 2023 TSHA Employee Stock Option (right to buy) Common Stock (334,005) $0.70 Dec. 14, 2033 334,005 Acquired
June 6, 2023 SLDB Director Stock Option (Right to Buy) Common Stock (9,650) $6.37 June 6, 2033 9,650 Acquired
Dec. 30, 2022 TSHA Stock Option (right to buy) Common Stock (790,093) $2.26 Dec. 30, 2032 790,093 Acquired
Dec. 13, 2022 SLDB Director Stock Option (Right to Buy) Common Stock (9,650) $6.47 Dec. 13, 2032 9,650 Acquired
June 17, 2022 TSHA Stock Option (right to buy) Common Stock (15,500) $2.81 June 17, 2032 15,500 Acquired
June 7, 2022 SLDB Director Stock Option (Right to Buy) Common Stock (51,000) $0.62 June 7, 2032 51,000 Acquired
June 17, 2021 TSHA Stock Option (right to buy) Common Stock (15,500) $25.04 June 17, 2031 15,500 Acquired
June 16, 2021 SLDB Director Stock Option (Right to Buy) Common Stock (30,000) $3.94 June 16, 2031 30,000 Acquired
Sept. 28, 2020 TSHA Series B Preferred Stock Common Stock (19,226) — — 17,647 Disposed
Sept. 23, 2020 TSHA Stock Option (right to buy) Common Stock (31,000) $20.00 Sept. 23, 2030 31,000 Acquired
June 16, 2020 SLDB Director Stock Option (Right to Buy) Common Stock $3.03 June 16, 2030 10,000 Acquired
June 16, 2020 SLDB Director Stock Option (Right to Buy) Common Stock (30,000) $3.03 June 16, 2030 30,000 Acquired
June 13, 2019 SLDB Director Stock Option (Right to Buy) Common Stock (10,000) $5.26 June 13, 2029 10,000 Acquired
Dec. 13, 2018 SLDB Director Stock Option (Right to Buy) Common Stock (17,240) $23.58 Dec. 13, 2028 17,240 Acquired
Sept. 12, 2018 SLDB Director Stock Option (Right to Buy) Common Stock (2,760) $50.65 Sept. 12, 2028 2,760 Acquired

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

Initial ownership (Form 3) 4 holdings

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

Date Ticker Security Shares Ownership
Sept. 23, 2020 TSHA Series B Preferred Stock→ Common Stock (19,226) 19,226 Direct
Sept. 23, 2020 TSHA Stock Option (right to buy)→ Common Stock (8,171) 8,171 Direct
May 9, 2019 IMVT Common Stock 20,000 Indirect
Sept. 13, 2018 SLDB Common Stock 2,000 Direct

Compensation (DEF 14A)

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

TSHA

M.D. President and Head of Research and Development and Director
Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2025 $608,166 — — — $425,716 — $1,138 $2,092,890
2024 $584,775 — — — $321,626 — $774 $3,601,660
2023 $565,000 — — — $254,250 — $1,344 $1,248,120

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