Steven D Rubin

CIK 1381874 · View on SEC EDGAR ↗

Insider

First SEC filing: June 5, 2026 · Latest: June 5, 2026

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Insider at

Insider transactions

2 buys (P) 0 sells (S) Net: $19,450 + 74 non-open-market transactions below Avg return of open purchases vs now: 127.6% 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

74 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
Feb. 12, 2026 ENTX P 5,000 $1.49 $7,450 15,000 Direct +50.00% Acquired 103.0% (price as of 2026-08-20)
Feb. 9, 2026 ENTX P 10,000 $1.20 $12,000 10,000 Direct — Acquired 152.1% (price as of 2026-08-20)
March 19, 2025 RDVT S 10,000 $38.93 $389,300 141,138 Direct -6.62% Disposed 79.1% (price as of 2026-08-20)
Jan. 5, 2024 OPK P 10,000 $0.87 $8,700 6,187,732 Direct +0.16% Acquired 67.8% (price as of 2026-08-20)
Nov. 10, 2023 OPK P 10,000 $1.30 $13,000 6,177,732 Direct +0.16% Acquired 12.3% (price as of 2026-08-20)
Aug. 26, 2020 OPK P 2,500 $4.01 $10,025 6,167,732 Direct +0.04% Acquired -63.6% (price as of 2026-08-20)
Aug. 26, 2020 OPK P 2,500 $3.99 $9,975 6,165,232 Direct +0.04% Acquired -63.4% (price as of 2026-08-20)
Aug. 26, 2020 OPK P 5,000 $3.99 $19,950 6,162,732 Direct +0.08% Acquired -63.4% (price as of 2026-08-20)
Oct. 25, 2019 OPK P 15,000 $1.50 $22,500 5,744,147 Direct +0.26% Acquired -2.7% (price as of 2026-08-20)
May 9, 2019 OPK P 7,200 $2.15 $15,480 5,729,147 Direct +0.13% Acquired -32.1% (price as of 2026-08-20)
May 9, 2019 OPK P 2,600 $2.13 $5,538 5,721,947 Direct +0.05% Acquired -31.5% (price as of 2026-08-20)
May 9, 2019 OPK P 200 $2.12 $424 5,719,347 Direct 0.00% Acquired -31.1% (price as of 2026-08-20)
March 6, 2019 OPK P 2,435 $2.56 $6,234 5,719,147 Direct +0.04% Acquired -43.0% (price as of 2026-08-20)
March 6, 2019 OPK P 5,565 $2.56 $14,246 5,716,712 Direct +0.10% Acquired -43.0% (price as of 2026-08-20)
March 7, 2018 OPK P 6,000 $3.25 $19,500 5,691,915 Direct +0.11% Acquired -55.1% (price as of 2026-08-20)
May 31, 2017 OPK P 2,000 $6.10 $12,200 5,685,915 Direct +0.04% Acquired -76.1% (price as of 2026-08-20)
May 11, 2017 OPK P 1,419 $6.91 $9,805 5,683,915 Direct +0.02% Acquired -78.9% (price as of 2026-08-20)
May 11, 2017 OPK P 581 $6.90 $4,009 5,682,496 Direct +0.01% Acquired -78.8% (price as of 2026-08-20)
Feb. 8, 2017 OPK P 2,000 $8.11 $16,220 5,575,251 Direct +0.04% Acquired -82.0% (price as of 2026-08-20)
Dec. 30, 2016 OPK P 2,000 $9.18 $18,360 5,573,251 Direct +0.04% Acquired -84.1% (price as of 2026-08-20)
March 30, 2016 OPK P 1,000 $10.17 $10,170 5,442,407 Direct +0.02% Acquired -85.6% (price as of 2026-08-20)
March 15, 2016 COCP P 39,216 $0.51 $20,000 733,484 Direct +5.65% Acquired -99.4% (price as of 2026-08-20)
March 15, 2016 COCP P 39,216 $0.51 $20,000 93,564 Direct +72.16% Acquired -99.4% (price as of 2026-08-20)
Aug. 20, 2015 OPK P 1,800 $12.40 $22,320 5,441,407 Direct +0.03% Acquired -88.2% (price as of 2026-08-20)
Aug. 20, 2015 OPK P 200 $12.40 $2,480 5,439,607 Direct 0.00% Acquired -88.2% (price as of 2026-08-20)
March 25, 2015 COCP P 54,348 $0.92 $50,000 694,268 Direct +8.49% Acquired -99.7% (price as of 2026-08-20)

Showing latest 100 of 157 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
Aug. 7, 2026 ENTX Stock Option (right to buy) Ordinary Shares, par value NIS 0.0000769 per share (33,368) $1.37 May 7, 2036 33,368 Acquired
Aug. 7, 2026 ENTX Stock Option (right to buy) Ordinary Shares, par value NIS 0.0000769 per share (43,405) $1.37 May 7, 2036 43,405 Acquired
June 24, 2026 NAGE Stock Option (right to buy) Common Stock (31,746) $3.45 June 23, 2036 31,746 Acquired
June 8, 2026 ELOX Stock Option (Right to Buy) Common Stock (4,018) $11.00 June 8, 2036 4,018 Acquired
Jan. 24, 2026 ELOX Restricted Stock Units Common Stock (1,875) — — 1,875 Disposed
Sept. 19, 2025 ELOX Stock Option (Right to Buy) Common Stock (179,854) $0.15 Sept. 19, 2035 179,854 Acquired
May 27, 2025 OPK Stock Option (Right to Buy) Common Stock (437,500) $1.31 May 26, 2035 437,500 Acquired
Jan. 24, 2025 ELOX Restricted Stock Units Common Stock (3,750) — — 3,750 Disposed
Jan. 24, 2024 ELOX Restricted Stock Units Common Stock (7,500) — — 7,500 Acquired
May 18, 2023 OPK Stock Option (Right to Buy) Common Stock (700,000) $1.58 May 17, 2033 700,000 Acquired
Jan. 30, 2023 ELOX Stock Options (Right to Buy) Common Stock (2,859) $4.00 Jan. 30, 2033 2,859 Acquired
June 15, 2022 ELOX Stock Options (Right to Buy) Common Stock (20,000) $0.26 June 15, 2032 20,000 Acquired
May 19, 2021 ELOX Stock Option (Right to Buy) Common Stock (20,000) $1.48 May 19, 2031 20,000 Acquired
Feb. 19, 2021 OPK Stock Option (Right to Buy) Common Stock (350,000) $4.81 Feb. 18, 2031 350,000 Acquired
June 19, 2020 NAGE Stock Options (right to buy) Common Stock (20,000) $4.67 June 18, 2030 20,000 Acquired
June 4, 2020 OPK Stock Option (Right to Buy) Common Stock (350,000) $2.27 June 3, 2030 350,000 Acquired
May 20, 2020 ELOX Stock Option (Right to Buy) Common Stock (20,000) $3.39 May 20, 2030 20,000 Acquired
July 1, 2019 OPK Stock Option (Right to Buy) Common Stock (250,000) $2.47 June 30, 2029 250,000 Acquired
July 1, 2019 OPK Stock Option (Right to Buy) Common Stock (250,000) $2.47 June 30, 2029 250,000 Acquired
June 21, 2019 NAGE Stock Options (right to buy) Common Stock (20,000) $3.80 June 21, 2029 20,000 Acquired
May 29, 2019 ELOX Stock Option (Right to Buy) Common Stock (20,000) $9.02 May 29, 2029 20,000 Acquired
Feb. 1, 2019 OPK Stock Option (Right to Buy) Common Stock (24,877) $0.66 Feb. 4, 2019 24,877 Disposed
June 22, 2018 NAGE Stock Options (right to buy) Common Stock (20,000) $3.83 June 22, 2028 20,000 Acquired
June 21, 2018 OPK Stock Option (Right to Buy) Common Stock (300,000) $4.46 June 20, 2028 300,000 Acquired
June 15, 2018 ELOX Stock Option (Right to Buy) Common Stock (40,000) $23.27 June 15, 2028 40,000 Acquired
Dec. 19, 2017 ELOX Common Stock Option (Right to Buy) Common Stock (43,189) $6.00 Dec. 19, 2027 43,189 Acquired
June 20, 2017 NAGE Stock Options (right to buy) Common Stock (20,000) $3.59 June 20, 2027 20,000 Acquired
April 12, 2017 OPK Stock Option (Right to Buy) Common Stock (265,000) $2.36 April 13, 2017 265,000 Disposed
April 6, 2017 NAGE Employee Stock Options (right to buy) Common Stock (40,000) $2.58 April 6, 2027 40,000 Acquired
Feb. 14, 2017 ELOX Company Stock Option Common Stock (160,227) $0.22 Feb. 14, 2027 160,227 Acquired
June 13, 2016 ELOX Company Stock Option Common Stock (89,773) $0.22 June 13, 2026 89,773 Acquired
May 3, 2016 OPK Stock Option (Right to Buy) Common Stock (250,000) $1.16 May 4, 2016 250,000 Disposed
April 1, 2016 OPK Stock Option (Right to Buy) Common Stock (450,000) $10.41 March 31, 2026 450,000 Acquired
Nov. 19, 2015 ELOX Company Stock Option Common Stock (40,000) $0.50 Nov. 19, 2025 40,000 Acquired
Sept. 24, 2015 FLNT Restricted Stock Units Common Stock (73,000) — — 73,000 Disposed
July 28, 2015 FLNT Restricted Stock Units Common Stock (27,000) — — 27,000 Disposed
April 13, 2015 COCP Stock options (Right to buy) [F1] Common Stock (350,000) $1.17 April 13, 2025 350,000 Acquired
March 24, 2015 FLNT Restricted Stock Units Common Stock (73,000) — — 73,000 Acquired
March 18, 2015 OPK Stock Option (Right to Buy) Common Stock (450,000) $14.42 March 17, 2025 450,000 Acquired
March 3, 2015 COCP Series B Convertible Preferred Stock Common Stock (109,920) — — 536 Disposed
Jan. 31, 2015 OPK Warrant (Right to Buy) Common Stock (22,125) $1.05 March 27, 2017 22,125 Disposed
Jan. 31, 2015 OPK Warrant (Right to Buy) Common Stock (22,124) $0.85 March 27, 2017 22,124 Disposed
Jan. 31, 2015 OPK Warrant (Right to Buy) Common Stock (22,124) $0.67 March 27, 2017 22,124 Disposed
Jan. 31, 2015 OPK Warrant (Right to Buy) Common Stock (648,700) — Jan. 11, 2017 6,487 Disposed
Jan. 31, 2015 OPK Warrant (Right to Buy) Common Stock (81,085) $0.00 Jan. 11, 2017 81,085 Disposed
Jan. 31, 2015 OPK Warrant (Right to Buy) Common Stock (4,000,000) $0.50 March 27, 2017 4,000,000 Disposed
Jan. 31, 2015 OPK Warrant (Right to Buy) Common Stock (345,480) $1.05 March 27, 2017 345,480 Disposed
Jan. 31, 2015 OPK Warrant (Right to Buy) Common Stock (345,480) $0.85 March 27, 2017 345,480 Disposed
Jan. 31, 2015 OPK Warrant (Right to Buy) Common Stock (345,480) $0.67 March 27, 2017 345,480 Disposed
Nov. 18, 2014 ELOX Common Stock Option (right to buy) Common Stock (3,314) $0.83 Nov. 18, 2024 3,314 Acquired
Nov. 18, 2014 ELOX Common Stock Option (right to buy) Common Stock (25,344) $0.83 Nov. 18, 2024 25,344 Acquired
April 14, 2014 OPK Stock Option (Right to Buy) Common Stock (350,000) $8.37 April 13, 2024 350,000 Acquired
April 11, 2014 OPK Stock Option (Right to Buy) Common Stock (200,000) $1.65 April 28, 2015 200,000 Disposed
April 11, 2014 OPK Stock Option (Right to Buy) Common Stock (500,000) $4.88 May 3, 2014 500,000 Disposed
Aug. 29, 2013 OPK Stock Option (Right to Buy) Common Stock (24,877) — Feb. 5, 2019 24,877 Acquired
Aug. 29, 2013 OPK Stock Option (Right to Buy) Common Stock (24,877) — Aug. 4, 2021 24,877 Acquired
Aug. 29, 2013 OPK Stock Option (Right to Buy) Common Stock (308,481) — Feb. 4, 2023 308,481 Acquired
March 18, 2013 OPK Stock Option (Right to Buy) Common Stock (450,000) $7.61 March 17, 2020 450,000 Acquired
April 14, 2010 OPK Stock Option (Right to Buy) Common Stock (265,000) $2.36 April 13, 2017 265,000 Acquired
Jan. 11, 2010 FLNT Stock Option (Right to Buy) Ordinary Shares (50,000) $7.14 Jan. 11, 2020 50,000 Acquired
May 5, 2009 OPK Stock Option (Right to Buy) Common Stock (250,000) $1.16 May 4, 2016 250,000 Acquired
April 28, 2008 OPK Stock Option (Right to Buy) Common Stock (200,000) $1.65 April 28, 2015 200,000 Acquired
May 3, 2007 OPK Stock Option (Right to Buy) Common Stock (500,000) $4.88 May 3, 2014 500,000 Acquired
March 27, 2007 OPK Warrants (Right to Buy) Common Stock (22,125) $1.05 March 27, 2017 22,125 Acquired
March 27, 2007 OPK Warrants (Right to Buy) Common Stock (22,124) $0.85 March 27, 2017 22,124 Acquired
March 27, 2007 OPK Warrants (Right to Buy) Common Stock (22,124) $0.67 March 27, 2017 22,124 Acquired
March 27, 2007 OPK Warrants (Right to Buy) Common Stock (648,700) $38.54 Jan. 11, 2017 6,487 Acquired
March 27, 2007 OPK Warrants (Right to Buy) Common Stock (81,085) $0.00 Jan. 11, 2017 81,085 Acquired
March 27, 2007 OPK Warrants (Right to Buy) Common Stock (4,000,000) $0.50 March 27, 2017 4,000,000 Acquired
March 27, 2007 OPK Warrants (Right to Buy) Common Stock (345,480) $1.05 March 27, 2017 345,480 Acquired
March 27, 2007 OPK Warrants (Right to Buy) Common Stock (345,480) $0.85 March 27, 2017 345,480 Acquired
March 27, 2007 OPK Warrants (Right to Buy) Common Stock (345,480) $0.67 March 27, 2017 345,480 Acquired

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

Initial ownership (Form 3) 13 holdings

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

Date Ticker Security Shares Ownership
March 30, 2018 RDVT Common Stock 48,138 Direct
March 24, 2015 FLNT Common Stock [F1] 63,255 Direct
March 24, 2015 FLNT Stock Options [F1]→ Common Stock (10,000) 10,000 Direct
March 24, 2015 FLNT Stock Options [F1]→ Common Stock (15,000) 15,000 Direct
March 24, 2015 FLNT Stock Options [F1]→ Common Stock (7,000) 7,000 Direct
March 24, 2015 FLNT Restricted Stock Units [F1]→ Common Stock (27,000) 27,000 Direct
March 17, 2014 COCP Common Stock 530,000 Direct
March 17, 2014 COCP Common Stock 4,545,993 Indirect
March 17, 2014 COCP Series B Preferred Stock→ Common Stock (109,920) 109,920 Direct
May 23, 2011 BCDA Common Stock, par value $0.001 per share — Direct
Sept. 23, 2008 BCDA Common Stock 102,821 Direct
Sept. 23, 2008 BCDA Options→ Common Stock (40,000) 40,000 Direct
Feb. 13, 2007 OPK Common Stock 74,355 Indirect

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

OPK

Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2024 $810,000 $400,000 — — — — — $1,845,050
2023 $810,000 $400,000 — — — — — $1,944,200
2022 $810,000 — — — — — — $822,200

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.