Sukumar Nagendran

CIK 1665124 · President and Head of R&D · last filed 2026-06-11

Sukumar Nagendran is a President and Head of R&D who has filed 44 SEC Form 4 insider transactions across 3 companies since 2016. The most recent filing, for SLDB, was dated Jun 11, 2026. Across all open-market trades the lifetime net is −$6.8M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $7.9M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

Loading insider history…
Disclosed Exposure

$7.88M

Companies

3

Total Filings

44

Lifetime Open-Market Net

-$6.84M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
SLDB Director 34,258 $7.14 $244.6K $0 12 2026-06-11
TSHA President and Head of R&D 1,336,410 $5.71 $7.63M -$4.80M 16 2026-04-13
AveXis, Inc. (AVXS) Delisted Sr. VP & Chief Medical Officer 0 -$2.03M 16 2018-05-15

Recent Filings

44 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2026-06-11 SLDB Grant (A) $0 EDGAR
2026-04-13 TSHA Mixed −180,979 -$859.5K EDGAR
2026-01-27 TSHA Sell (S) −116,050 -$547.5K EDGAR
2026-01-14 TSHA Mixed +427,000 -$712.6K EDGAR
2025-12-01 TSHA Mixed -$1.13M EDGAR
2025-09-12 TSHA Mixed −158,850 -$617.2K EDGAR
2025-08-22 TSHA Sell (S) −57,054 -$162.6K EDGAR
2025-06-13 SLDB Grant (A) $0 EDGAR
2025-01-03 TSHA Grant (A) +324,500 $0 EDGAR
2024-06-13 SLDB Grant (A) $0 EDGAR
Showing 110 of 44
Page 1 of 5
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.