Lindsay A. Rosenwald, M.D.

CIK 941841 · View on SEC EDGAR ↗

Activist

First SEC filing: March 20, 2026 · Latest: March 20, 2026

On this page

Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 50 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

50 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
Sept. 23, 2024 FBIOP P 763,359 $1.84 $1,404,581 3,657,264 Direct +26.38% Acquired 897.3% (price as of 2026-08-21)
Sept. 23, 2024 FBIOP P 763,359 $0.12 $91,603 763,359 Direct — Acquired 15191.7% (price as of 2026-08-21)
July 11, 2024 FBIOP P 5,000 $7.48 $37,400 127,500 Direct +4.08% Acquired 145.3% (price as of 2026-08-21)
July 9, 2024 FBIOP P 5,000 $7.39 $36,950 122,500 Direct +4.26% Acquired 148.3% (price as of 2026-08-21)
July 8, 2024 FBIOP P 5,000 $7.35 $36,750 117,500 Direct +4.44% Acquired 149.7% (price as of 2026-08-21)
June 28, 2024 FBIOP P 20,000 $1.64 $32,800 2,893,905 Direct +0.70% Acquired 1018.9% (price as of 2026-08-21)
May 16, 2024 FBIOP P 10,000 $1.76 $17,600 2,873,905 Direct +0.35% Acquired 942.6% (price as of 2026-08-21)
March 25, 2024 DERM P 10,000 $3.04 $30,400 144,245 Direct +7.45% Acquired 156.6% (price as of 2026-08-21)
March 22, 2024 DERM P 20,000 $3.40 $68,000 134,245 Direct +17.51% Acquired 129.4% (price as of 2026-08-21)
Jan. 5, 2024 FBIOP P 50,000 $2.38 $119,000 2,863,905 Direct +1.78% Acquired 671.0% (price as of 2026-08-21)
Nov. 14, 2023 FBIOP P 1,567,515 — — 1,567,515 Direct — Acquired (price as of 2026-08-21)
Nov. 14, 2023 FBIOP P 1,567,515 $1.70 $2,664,776 2,597,440 Direct +152.20% Acquired 979.4% (price as of 2026-08-21)
Sept. 26, 2023 FBIOP P 100,000 $0.28 $28,000 15,449,091 Direct +0.65% Acquired 6453.6% (price as of 2026-08-21)
Sept. 6, 2023 DERM P 100,000 $2.23 $223,000 114,245 Direct +702.00% Acquired 249.8% (price as of 2026-08-21)
Aug. 18, 2023 FBIOP P 10,000 $9.34 $93,400 112,500 Direct +9.76% Acquired 96.5% (price as of 2026-08-21)
Aug. 17, 2023 FBIOP P 10,000 $11.75 $117,500 102,500 Direct +10.81% Acquired 56.2% (price as of 2026-08-21)
Feb. 10, 2023 FBIOP P 2,395,209 $0.84 $2,011,976 15,349,091 Direct +18.49% Acquired 2084.5% (price as of 2026-08-21)
Dec. 1, 2022 FBIOP P 100,000 $0.68 $68,000 11,730,324 Direct +0.86% Acquired 2598.5% (price as of 2026-08-21)
Nov. 30, 2022 FBIOP P 5,000 $0.56 $2,800 11,630,324 Direct +0.04% Acquired 3176.8% (price as of 2026-08-21)
Oct. 21, 2022 FBIOP P 100,000 $0.70 $70,000 11,625,324 Direct +0.87% Acquired 2521.4% (price as of 2026-08-21)
Sept. 13, 2022 MBIO P 5,000 $0.52 $2,600 299,181 Direct +1.70% Acquired -99.9% (price as of 2026-08-21)
March 18, 2022 MBIO P 4,094 $0.74 $3,030 222,517 Direct +1.87% Acquired -99.9% (price as of 2026-08-21)
Dec. 14, 2020 MBIO P 100,000 $2.66 $266,000 202,436 Direct +97.62% Acquired -100.0% (price as of 2026-08-21)
Dec. 14, 2020 MBIO P 100,000 $2.66 $266,000 200,423 Direct +99.58% Acquired -100.0% (price as of 2026-08-21)
Aug. 26, 2020 FBIOP P 52,500 $18.00 $945,000 92,500 Direct +131.25% Acquired 1.9% (price as of 2026-08-21)
Dec. 1, 2019 FBIOP P 1,123 $2.06 $2,313 8,572,312 Direct +0.01% Acquired 790.8% (price as of 2026-08-21)
June 3, 2019 FBIOP P 1,467 $1.10 $1,614 8,571,189 Direct +0.02% Acquired 1568.2% (price as of 2026-08-21)
Nov. 2, 2018 MBIO P 50,000 $4.41 $220,500 70,000 Direct +250.00% Acquired -100.0% (price as of 2026-08-21)
Nov. 6, 2017 FBIOP P 40,000 $25.00 $1,000,000 40,000 Direct — Acquired -26.6% (price as of 2026-08-21)
Dec. 1, 2015 FBIOP P 586 $2.41 $1,412 4,792,692 Direct +0.01% Acquired 661.4% (price as of 2026-08-21)
June 1, 2015 FBIOP P 785 $1.80 $1,413 4,792,106 Direct +0.02% Acquired 919.4% (price as of 2026-08-21)
Dec. 1, 2014 FBIOP P 974 $1.45 $1,412 4,791,321 Direct +0.02% Acquired 1165.5% (price as of 2026-08-21)
Nov. 6, 2014 FBIOP P 150,000 $1.61 $241,500 4,790,347 Direct +3.23% Acquired 1039.8% (price as of 2026-08-21)
June 22, 2012 FBIOP P 200,000 $5.00 $1,000,000 2,659,001 Direct +8.13% Acquired 267.0% (price as of 2026-08-21)
Jan. 23, 2012 FBIOP P 2,000 $6.95 $13,900 2,461,001 Direct +0.08% Acquired 164.0% (price as of 2026-08-21)
Jan. 23, 2012 FBIOP P 2,000 $6.95 $13,900 2,459,001 Direct +0.08% Acquired 164.0% (price as of 2026-08-21)
Jan. 23, 2012 FBIOP P 2,000 $6.95 $13,900 2,425,632 Direct +0.08% Acquired 164.0% (price as of 2026-08-21)
Jan. 20, 2012 FBIOP P 2,000 $5.66 $11,320 2,423,632 Direct +0.08% Acquired 224.2% (price as of 2026-08-21)
Jan. 19, 2012 FBIOP P 2,000 $5.67 $11,340 2,421,632 Direct +0.08% Acquired 223.6% (price as of 2026-08-21)
Jan. 18, 2012 FBIOP P 2,000 $5.66 $11,320 2,419,632 Direct +0.08% Acquired 224.2% (price as of 2026-08-21)
Jan. 17, 2012 FBIOP P 2,000 $5.40 $10,800 2,417,632 Direct +0.08% Acquired 239.8% (price as of 2026-08-21)
Jan. 13, 2012 FBIOP P 2,000 $5.40 $10,800 2,415,632 Direct +0.08% Acquired 239.8% (price as of 2026-08-21)
Jan. 12, 2012 FBIOP P 2,000 $5.20 $10,400 2,413,632 Direct +0.08% Acquired 252.9% (price as of 2026-08-21)
Jan. 11, 2012 FBIOP P 2,000 $5.49 $10,980 2,411,632 Direct +0.08% Acquired 234.2% (price as of 2026-08-21)
Dec. 8, 2011 FBIOP P 2,000 $7.00 $14,000 2,409,632 Direct +0.08% Acquired 162.1% (price as of 2026-08-21)
May 11, 2005 TGTX P 5,000 $1.56 $7,800 2,649,321 Direct +0.19% Acquired -98.7% (price as of 2026-08-21)
May 9, 2005 TGTX P 5,000 $1.50 $7,500 2,644,321 Direct +0.19% Acquired -98.7% (price as of 2026-08-21)
May 4, 2005 TGTX P 2,000 $1.41 $2,820 2,639,321 Direct +0.08% Acquired -98.6% (price as of 2026-08-21)
May 4, 2005 TGTX P 2,000 $1.40 $2,800 2,637,321 Direct +0.08% Acquired -98.6% (price as of 2026-08-21)
April 1, 2005 TGTX P 5,000 $1.55 $7,750 2,564,321 Direct +0.20% Acquired -98.7% (price as of 2026-08-21)

Showing latest 100 of 173 transactions

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
Sept. 23, 2024 FBIOP Warrants to Purchase Common Stock Common Stock (763,359) $1.84 March 23, 2030 763,359 Acquired
Nov. 14, 2023 FBIOP Warrants to purchase Common Stock Common Stock (1,567,515) $1.70 Nov. 14, 2028 1,567,515 Acquired
Feb. 7, 2013 FBIOP Options to purchase Common Stock Common Stock (15,000) $7.42 Feb. 7, 2023 15,000 Acquired
Feb. 10, 2012 FBIOP Options to purchase Common Stock Common Stock (15,000) $6.25 Feb. 10, 2022 15,000 Acquired
Nov. 15, 2011 FBIOP Warrant to purchase Common Stock Common Stock (5,960) $6.15 June 25, 2014 5,960 Disposed
Nov. 15, 2011 FBIOP Warrant to purchase Common Stock Common Stock (3,337) $6.15 May 28, 2014 3,337 Disposed
Nov. 15, 2011 FBIOP Warrant to purchase Common Stock Common Stock (17,878) $6.15 Jan. 22, 2014 17,878 Disposed
Oct. 25, 2011 FBIOP Warrants to purchase Common Stock Common Stock — — 850 Acquired
Oct. 25, 2011 FBIOP Warrants to purchase Common Stock Common Stock — — 3,399 Acquired
Oct. 25, 2011 FBIOP Warrants to purchase Common Stock Common Stock — — 6,798 Acquired
Oct. 5, 2010 FBIOP Options to purchase Common Stock Common Stock (25,000) $1.37 Oct. 5, 2020 25,000 Acquired
June 24, 2009 FBIOP Warrants to purchase Common Stock Common Stock (566) $9.23 June 24, 2014 566 Acquired
May 28, 2009 FBIOP Warrants to purchase Common Stock Common Stock (2,265) $9.23 May 28, 2014 2,265 Acquired
Jan. 22, 2009 FBIOP Warrants to purchase Common Stock Common Stock (4,529) $9.23 Jan. 22, 2014 4,529 Acquired
May 3, 2006 TCRT Warrants Common Stock (250,188) $5.09 May 3, 2013 250,188 Acquired
Oct. 13, 2004 TGTX Warrants Common Stock (486,034) $1.10 Jan. 30, 2009 0 Acquired
Oct. 13, 2004 TGTX Series A Preferred Stock Common Stock $9.09 — 0 Acquired
Oct. 13, 2004 TGTX Warrants Common Stock (30,851) $16.83 July 7, 2008 0 Acquired

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

Initial ownership (Form 3) 34 holdings

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

Date Ticker Security Shares Ownership
April 6, 2023 MBIO Warrants to Purchase Shares of Common Stock→ Common Stock (500,000) 500,000 Direct
July 25, 2022 DERM Common Stock, par value $0.0001 per share 176,470 Indirect
July 25, 2022 DERM Common Stock Warrant [F2]→ Common Stock (500,000) 500,000 Direct
July 20, 2017 MBIO Common Stock (Restricted) 10,000 Direct
Sept. 13, 2011 FBIOP Common Stock, par value $.001 per share 2,047,632 Direct
Sept. 13, 2011 FBIOP Common Stock, par value $.001 per share 40,640 Indirect
Sept. 13, 2011 FBIOP Common Stock, par value $.001 per share 42,676 Indirect
Sept. 13, 2011 FBIOP Common Stock, par value $.001 per share 71,303 Indirect
Sept. 13, 2011 FBIOP Common Stock, par value $.001 per share 100,000 Indirect
Sept. 13, 2011 FBIOP Common Stock, par value $.001 per share 80,000 Indirect
Sept. 13, 2011 FBIOP Common Stock, par value $.001 per share 720,000 Indirect
Sept. 13, 2011 FBIOP Common Stock, par value $.001 per share 100,000 Indirect
Sept. 13, 2011 FBIOP Options to purchase Common Stock→ Common Stock (25,000) 25,000 Direct
Sept. 13, 2011 FBIOP Warrant to purchase Common Stock→ Common Stock (17,878) 17,878 Indirect
Sept. 13, 2011 FBIOP Warrant to purchase Common Stock→ Common Stock (3,337) 3,337 Indirect
Sept. 13, 2011 FBIOP Warrant to purchase Common Stock→ Common Stock (5,960) 5,960 Indirect
Sept. 13, 2011 FBIOP Series A Convertible Preferred Stock→ Common Stock (98,164) 98,164 Direct
Sept. 13, 2011 FBIOP Series A Convertible Preferred Stock→ Common Stock (81,280) 81,280 Indirect
Sept. 13, 2011 FBIOP Series A Convertible Preferred Stock→ Common Stock (142,607) 142,607 Indirect
Sept. 13, 2011 FBIOP Series A Convertible Preferred Stock→ Common Stock (85,353) 85,353 Indirect
Sept. 13, 2011 FBIOP Series B Convertible Preferred Stock→ Common Stock (82,536) 82,536 Direct
Sept. 13, 2011 FBIOP Series B Convertible Preferred Stock→ Common Stock (49,063) 49,063 Indirect
Sept. 13, 2011 FBIOP Series B Convertible Preferred Stock→ Common Stock (528,951) 528,951 Indirect
Sept. 13, 2011 FBIOP Series B Convertible Preferred Stock→ Common Stock (325,793) 325,793 Indirect
Sept. 13, 2011 FBIOP Series C Convertible Preferred Stock→ Common Stock (214,669) 214,669 Direct
Feb. 13, 2006 TCRT Common stock 476,678 Direct
Feb. 13, 2006 TCRT Warrants→ Common stock (221,011) 221,011 Direct
Feb. 13, 2006 TCRT Warrants→ Common stock (62,621) 62,621 Indirect
Feb. 13, 2006 TCRT Common stock→ Common stock (563,296) 563,296 Indirect
Sept. 23, 2005 TCRT Common Stock 476,678 Direct
Sept. 23, 2005 TCRT Common Stock 737,777 Indirect
Sept. 23, 2005 TCRT Warrants→ Common Stock (221,011) 221,011 Direct
Sept. 23, 2005 TCRT Warrants→ Common Stock (62,621) 62,621 Indirect
Nov. 17, 2003 TGTX Series A Convertible Preferred Stock→ Common — Direct