Insider at

04

Insider transactions

05
3 buys (P) 0 sells (S) Net: $58,575 + 18 non-open-market transactions below Avg return of open purchases vs now: 9.9% 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

18 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
Dec. 23, 2025 GALT P 5,500 $3.55 $19,525 55,269 Direct +11.05% Acquired 9.9% (price as of 2026-10-02)
Dec. 23, 2025 GALT P 5,500 $3.55 $19,525 55,269 Direct +11.05% Acquired 9.9% (price as of 2026-10-02)
Dec. 23, 2025 GALT P 5,500 $3.55 $19,525 55,269 Direct +11.05% Acquired 9.9% (price as of 2026-10-02)
July 17, 2025 GALT P 5,000 $2.90 $14,500 49,769 Direct +11.17% Acquired 34.5% (price as of 2026-10-02)
Dec. 24, 2024 GALT P 10,000 $0.81 $8,100 44,769 Direct +28.76% Acquired 381.5% (price as of 2026-10-02)
Oct. 17, 2024 GALT P 1,300 $2.64 $3,432 34,769 Direct +3.88% Acquired 47.7% (price as of 2026-10-02)
Oct. 16, 2024 GALT P 5,000 $2.70 $13,500 80,000 Indirect +6.67% Acquired 44.4% (price as of 2026-10-02)
Oct. 16, 2024 GALT P 5,000 $2.70 $13,500 33,469 Direct +17.56% Acquired 44.4% (price as of 2026-10-02)
June 20, 2024 GALT P 2,500 $2.38 $5,950 28,469 Direct +9.63% Acquired 63.9% (price as of 2026-10-02)
April 22, 2024 GALT P 2,500 $2.98 $7,450 25,969 Direct +10.65% Acquired 30.9% (price as of 2026-10-02)
Oct. 28, 2022 GALT P 10,000 $1.41 $14,100 75,000 Indirect +15.38% Acquired 176.6% (price as of 2026-10-02)
May 19, 2022 GALT P 5,000 $1.33 $6,650 65,000 Indirect +8.33% Acquired 193.2% (price as of 2026-10-02)
April 18, 2022 GALT P 5,000 $1.71 $8,550 60,000 Indirect +9.09% Acquired 128.1% (price as of 2026-10-02)
Jan. 19, 2022 GALT P 5,000 $1.96 $9,800 55,000 Indirect +10.00% Acquired 99.0% (price as of 2026-10-02)
Jan. 19, 2022 GALT P 5,000 $1.96 $9,800 50,000 Indirect +11.11% Acquired 99.0% (price as of 2026-10-02)
Dec. 15, 2021 GALT P 5,000 $2.28 $11,400 50,000 Indirect +11.11% Acquired 71.1% (price as of 2026-10-02)
Dec. 6, 2021 GALT P 5,000 $2.28 $11,400 50,000 Indirect +11.11% Acquired 71.1% (price as of 2026-10-02)
Dec. 6, 2021 GALT P 5,000 $2.34 $11,700 45,000 Indirect +12.50% Acquired 66.7% (price as of 2026-10-02)
Oct. 29, 2021 GALT P 2,000 $3.17 $6,340 40,000 Indirect +5.26% Acquired 23.0% (price as of 2026-10-02)
Oct. 21, 2021 GALT P 2,000 $3.19 $6,380 38,000 Indirect +5.56% Acquired 22.3% (price as of 2026-10-02)
Oct. 19, 2021 GALT P 3,000 $3.37 $10,110 36,000 Indirect +9.09% Acquired 15.7% (price as of 2026-10-02)
Sept. 23, 2021 GALT P 3,000 $3.88 $11,640 33,000 Indirect +10.00% Acquired 0.5% (price as of 2026-10-02)
April 5, 2021 GALT P 5,000 $2.04 $10,200 30,000 Indirect +20.00% Acquired 91.2% (price as of 2026-10-02)
Sept. 4, 2020 GALT P 5,000 $2.57 $12,850 25,000 Indirect +25.00% Acquired 51.8% (price as of 2026-10-02)
March 19, 2020 GALT P 6,000 $1.64 $9,840 20,000 Indirect +42.86% Acquired 137.8% (price as of 2026-10-02)
Nov. 15, 2019 GALT P 3,000 $3.36 $10,080 14,000 Indirect +27.27% Acquired 16.1% (price as of 2026-10-02)
Sept. 6, 2019 GALT P 1,290 $3.71 $4,786 11,000 Indirect +13.29% Acquired 5.1% (price as of 2026-10-02)
May 31, 2019 GALT P 25,700 · · 25,700 Indirect · Acquired (price as of 2026-10-02)
May 31, 2019 GALT P 4,753 · · 4,753 Direct · Acquired (price as of 2026-10-02)
May 31, 2019 GALT P 1,426 $4.28 $6,103 23,469 Direct +6.47% Acquired -8.9% (price as of 2026-10-02)
May 31, 2019 GALT P 7,710 $4.28 $32,999 9,710 Indirect +385.50% Acquired -8.9% (price as of 2026-10-02)
April 5, 2019 GALT P 500 $4.73 $2,365 2,000 Indirect +33.33% Acquired -17.5% (price as of 2026-10-02)
Feb. 8, 2019 GALT P 1,500 $4.28 $6,420 1,500 Indirect · Acquired -8.9% (price as of 2026-10-02)
Feb. 1, 2018 GALT P 2,000 $4.10 $8,200 16,000 Indirect +14.29% Acquired -4.9% (price as of 2026-10-02)
Feb. 1, 2018 GALT P 2,000 $4.10 $8,200 16,000 Indirect +14.29% Acquired -4.9% (price as of 2026-10-02)
Dec. 7, 2017 GALT P 400 $1.64 $656 28,043 Direct +1.45% Acquired 137.8% (price as of 2026-10-02)
Dec. 7, 2017 GALT P 8,000 $1.63 $13,040 8,000 Indirect · Acquired 139.3% (price as of 2026-10-02)
June 1, 2015 GALT P 2,083 $2.70 $5,624 2,083 Indirect · Acquired 44.4% (price as of 2026-10-02)
Aug. 15, 2014 GALT P 1,000 $4.70 $4,700 3,917 Direct +34.28% Acquired -17.0% (price as of 2026-10-02)
Nov. 18, 2013 GALT P 1,000 $6.08 $6,080 2,917 Direct +52.16% Acquired -35.9% (price as of 2026-10-02)
May 28, 2013 GALT P 1,000 $4.21 $4,210 6,500 Direct +18.18% Acquired -7.4% (price as of 2026-10-02)

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
Jan. 16, 2026 GALT Stock option (right to buy) [F1] Common Stock (60,000) $3.04 Jan. 16, 2036 60,000 Acquired
Jan. 23, 2025 GALT Stock Option (right to buy) [F1] Common Stock (60,000) $1.23 Jan. 23, 2035 60,000 Acquired
Jan. 24, 2024 GALT Stock Option (right to buy) [F1] Common Stock (50,000) $1.72 Jan. 24, 2034 50,000 Acquired
Jan. 26, 2023 GALT Stock Option (right to buy) [F1] Common Stock (40,000) $1.11 Jan. 26, 2033 40,000 Acquired
Jan. 24, 2022 GALT Stock Option (right to buy) [F1] Common Stock (40,000) $1.98 Jan. 24, 2032 40,000 Acquired
March 25, 2021 GALT Stock option (right to buy) [F1] Common Stock (70,000) $2.11 March 25, 2031 70,000 Acquired
March 25, 2021 GALT Stock option (right to buy) [F1] Common Stock (40,000) $2.11 March 25, 2031 40,000 Acquired
Jan. 9, 2020 GALT Stock option (right to buy) [F1] Common Stock (45,000) $2.86 Jan. 9, 2030 45,000 Acquired
May 31, 2019 GALT Common Stock Purchase Warrant (right to buy) Common Stock (1,928) $7.00 May 31, 2026 25,700 Acquired
May 31, 2019 GALT Common Stock Purchase Warrant (right to buy) Common Stock (356) $7.00 May 31, 2026 4,753 Acquired
Jan. 16, 2019 GALT Stock option (right to buy) Common stock (40,000) $4.72 Jan. 16, 2029 40,000 Acquired
Dec. 14, 2017 GALT Stock option (right to buy) Common stock (46,875) $2.39 Dec. 14, 2027 46,875 Acquired
Dec. 15, 2016 GALT Stock option (right to buy) Common stock (31,250) $0.89 Dec. 15, 2026 31,250 Acquired
April 8, 2015 GALT Stock Option (right to buy) Common Stock (14,815) $8.10 June 2, 2021 14,815 Disposed
March 28, 2013 GALT Stock Option (right to buy) Common Stock (16,714) $3.59 March 28, 2023 16,714 Acquired
June 2, 2011 GALT Employee Stock Option (right to buy) Common Stock · June 2, 2021 89 Acquired
June 2, 2011 GALT Employee Stock Option (right to buy) Common Stock (96,000) $1.25 June 2, 2021 96,000 Acquired

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

Initial ownership (Form 3) 1 holding

07

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

DateTickerSecuritySharesOwnership
June 3, 2011 GALT Common Stock 5,500 Direct