Alisa Lask

CIK 1767593 · View on SEC EDGAR ↗

Insider

First SEC filing: March 18, 2026 · Latest: March 18, 2026

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Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 11 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

11 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
Sept. 11, 2019 NEPH P 250 $6.45 $1,612 250 Direct Acquired -26.7% (price as of 2026-08-20)

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
Jan. 1, 2025 NEPH Stock Option (right to buy) Common Stock (7,050) $1.47 Jan. 1, 2035 7,050 Acquired
May 14, 2024 NEPH Stock Option (right to buy) Common Stock (7,323) $2.14 May 14, 2034 7,323 Acquired
Jan. 5, 2023 NEPH Stock Option (right to buy) Common Stock (7,080) $1.07 Jan. 5, 2033 7,080 Acquired
Jan. 6, 2021 NEPH Stock Option (right to buy) Common Stock (6,850) $8.06 Jan. 6, 2031 6,850 Acquired
Dec. 16, 2019 NEPH Stock Option (right to buy) Common Stock (5,568) $8.57 Dec. 16, 2029 5,568 Acquired
Feb. 8, 2019 NEPH Stock Option (right to buy) Common Stock (86,546) $0.58 Feb. 8, 2029 86,546 Acquired
Feb. 8, 2019 NEPH Stock Option (right to buy) Common Stock (70,817) $0.58 Feb. 8, 2029 70,817 Acquired

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

Initial ownership (Form 3) 2 holdings

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

Date Ticker Security Shares Ownership
March 18, 2026 CLGN Restricted Share Units Direct
March 18, 2026 CLGN Options to Purchase Ordinary Shares [F2]→ Ordinary Shares Direct