Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 3 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

No open-market trades on record; showing all filings.

DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
May 1, 2023 ELDN A 150,437 · · 150,437 Direct · Acquired (price as of 2026-10-05)
Feb. 1, 2023 ELDN A 20,000 · · 20,000 Direct · Acquired (price as of 2026-10-05)
Feb. 1, 2022 ELDN A 20,000 · · 20,000 Direct · Acquired (price as of 2026-10-05)

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.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
May 1, 2023 ELDN Stock Option (right to buy) Common Stock (150,437) $2.30 May 1, 2033 150,437 Acquired
Feb. 1, 2023 ELDN Stock Option (right to buy) Common Stock (20,000) $3.08 Feb. 1, 2033 20,000 Acquired
Feb. 1, 2022 ELDN Stock Option (right to buy) Common Stock (20,000) $3.97 Feb. 1, 2032 20,000 Acquired

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

Initial ownership (Form 3) 6 holdings

07

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

DateTickerSecuritySharesOwnership
Sept. 24, 2020 ELDN Stock Option (Right to Buy)→ Common Stock (10,415) 10,415 Direct
Sept. 24, 2020 ELDN Stock Option (Right to Buy)→ Series X1 Convertible Preferred Stock [F2] (462) 462 Direct
Sept. 24, 2020 ELDN Stock Option (Right to Buy)→ Common Stock (19,190) 19,190 Direct
Sept. 24, 2020 ELDN Stock Option (Right to Buy)→ Series X1 Convertible Preferred Stock [F2] (851) 851 Direct
Sept. 24, 2020 ELDN Stock Option (Right to Buy)→ Common Stock (68,791) 68,791 Direct
Sept. 24, 2020 ELDN Stock Option (Right to Buy)→ Series X1 Convertible Preferred Stock [F2] (3,049) 3,049 Direct