Sukumar Nagendran

CIK 1665124 · President and Head of R&D · last filed 2026-07-10

"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.

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Disclosed Exposure

$6.28M

Companies

3

Total Filings

52

Lifetime Open-Market Net

-$8.08M

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
TSHA President and Head of R&D 936,410 $6.68 $6.26M -$6.05M 17 2026-07-10
SLDB Director 2,284 $8.85 $20.2K $0 12 2026-06-11
AveXis, Inc. (AVXS) Delisted Sr. VP & Chief Medical Officer 0 -$2.03M 16 2018-05-15

Recent Filings · Page 5 of 6

52 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2018-01-04 AveXis, Inc. (AVXS) Delisted Mixed -$162.4K EDGAR
2017-12-05 AveXis, Inc. (AVXS) Delisted Mixed -$135.8K EDGAR
2017-11-03 AveXis, Inc. (AVXS) Delisted Mixed -$147.4K EDGAR
2017-10-03 AveXis, Inc. (AVXS) Delisted Mixed -$140.2K EDGAR
2017-09-05 AveXis, Inc. (AVXS) Delisted Mixed -$133.1K EDGAR
2017-08-03 AveXis, Inc. (AVXS) Delisted Mixed -$130.0K EDGAR
2017-07-05 AveXis, Inc. (AVXS) Delisted Mixed -$112.9K EDGAR
2017-06-02 AveXis, Inc. (AVXS) Delisted Mixed -$93.3K EDGAR
2017-05-12 AveXis, Inc. (AVXS) Delisted Grant (A) $0 EDGAR
2017-05-02 AveXis, Inc. (AVXS) Delisted Mixed -$112.0K EDGAR
Showing 4150 of 52
Page 5 of 6
Form 4 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.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.