David Sidransky

CIK 1277161 · View on SEC EDGAR ↗

Insider

First SEC filing: June 16, 2008 · Latest: March 23, 2026

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Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 9 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.

Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
Nov. 1, 2016 CSBR A 16,667 — — 16,667 Direct — Acquired (price as of 2026-08-19)
Nov. 2, 2015 CSBR A 16,667 — — 16,667 Direct — Acquired (price as of 2026-08-19)
Oct. 13, 2014 CSBR A 200,000 — — 200,000 Direct — Acquired (price as of 2026-08-19)
Dec. 12, 2013 CSBR A 200,000 — — 200,000 Direct — Acquired (price as of 2026-08-19)
July 14, 2011 CSBR A 100,000 — — 100,000 Direct — Acquired (price as of 2026-08-19)
July 14, 2011 CSBR A 100,000 — — 10,675,000 Direct +0.95% Acquired (price as of 2026-08-19)
Aug. 28, 2009 CSBR A 80,000 — — 80,000 Direct — Acquired (price as of 2026-08-19)
March 31, 2008 CSBR A 40,000 — — 40,000 Direct — Acquired (price as of 2026-08-19)
May 17, 2007 CSBR J 3,800,000 — — 10,800,000 Direct +54.29% Acquired (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
Nov. 1, 2016 CSBR Stock Options Common Stock (16,667) $1.59 Oct. 31, 2021 16,667 Acquired
Nov. 2, 2015 CSBR Stock Options Common Stock (16,667) $5.46 Nov. 2, 2020 16,667 Acquired
Oct. 13, 2014 CSBR Stock Options Common Stock (200,000) $0.60 Oct. 13, 2019 200,000 Acquired
Dec. 12, 2013 CSBR Stock Options Common Stock (200,000) $1.26 Dec. 12, 2018 200,000 Acquired
July 14, 2011 CSBR Common Stock Purchase Options Common Stock (100,000) $0.90 July 13, 2016 100,000 Acquired
Aug. 28, 2009 CSBR Right to Purchase Common Stock (80,000) $0.77 Aug. 27, 2019 80,000 Acquired
March 31, 2008 CSBR Director Stock Options Common Stock (40,000) $1.15 March 31, 2013 40,000 Acquired

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

Initial ownership (Form 3) 21 holdings

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

Date Ticker Security Shares Ownership
March 23, 2026 AAPG Ordinary Shares [F1] 10,641 Direct
March 23, 2026 AAPG Options→ Ordinary Shares — Direct
March 23, 2026 AAPG Restricted share units→ Ordinary Shares — Direct
March 19, 2026 AAPG Options→ Ordinary Shares (56,550) 56,550 Direct
March 19, 2026 AAPG Restricted stock units→ Ordinary Shares (66,550) 66,550 Direct
March 18, 2026 GLMD Ordinary Shares 11,083 Direct
March 18, 2026 GLMD Restricted Share Units 1,042 Direct
March 18, 2026 GLMD Restricted Share Units 11,666 Direct
March 18, 2026 GLMD Restricted Share Units 12,500 Direct
March 18, 2026 GLMD Options to Purchase Ordinary Shares→ Ordinary Shares (111) 111 Direct
March 18, 2026 GLMD Options to Purchase Ordinary Shares→ Ordinary Shares (166) 166 Direct
Jan. 2, 2015 AKTX Ordinary Shares 54,732 Direct
Jan. 2, 2015 AKTX Options to Purchase Ordinary Shares→ Ordinary Shares (68,250) 68,250 Direct
Jan. 2, 2015 AKTX Options to Purchase Ordinary Shares→ Ordinary Shares (60,227) 60,227 Direct
Jan. 2, 2015 AKTX Options to Purchase Ordinary Shares→ Ordinary Shares (25,000) 25,000 Direct
Jan. 2, 2015 AKTX Options to Purchase Ordinary Shares→ Ordinary Shares (30,000) 30,000 Direct
Jan. 2, 2015 AKTX Options to Purchase Ordinary Shares→ Ordinary Shares (100,000) 100,000 Direct
Jan. 2, 2015 AKTX Options to Purchase Ordinary Shares→ Ordinary Shares (45,000) 45,000 Direct
Jan. 2, 2015 AKTX Options to Purchase Ordinary Shares→ Ordinary Shares (45,000) 45,000 Direct
Jan. 2, 2015 AKTX Warrants to Purchase Ordinary Shares→ Ordinary Shares (12,500) 12,500 Direct
Jan. 11, 2007 CSBR Common Stock 7,000,000 Direct