Gregory Ian Frost

CIK 1283518 · View on SEC EDGAR ↗

Insider

First SEC filing: Feb. 11, 2005 · Latest: Feb. 9, 2007

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Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 22 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

22 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
Oct. 25, 2007 HALO S 10b5-1 400 $8.91 $3,564 3,084,206 Direct -0.01% Disposed 1102.2% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 300 $8.92 $2,676 3,083,906 Direct -0.01% Disposed 1100.9% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 300 $8.93 $2,679 3,083,606 Direct -0.01% Disposed 1099.6% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 1,100 $8.94 $9,834 3,082,506 Direct -0.04% Disposed 1098.2% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 1,900 $8.95 $17,005 3,080,606 Direct -0.06% Disposed 1096.9% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 700 $8.96 $6,272 3,079,906 Direct -0.02% Disposed 1095.5% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 700 $8.97 $6,279 3,079,206 Direct -0.02% Disposed 1094.2% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 1,354 $8.98 $12,159 3,077,852 Direct -0.04% Disposed 1092.9% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 600 $8.99 $5,394 3,077,252 Direct -0.02% Disposed 1091.5% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 46 $9.00 $414 3,077,206 Direct 0.00% Disposed 1090.2% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 200 $9.01 $1,802 3,077,006 Direct -0.01% Disposed 1088.9% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 1,100 $9.02 $9,922 3,075,906 Direct -0.04% Disposed 1087.6% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 200 $9.03 $1,806 3,075,706 Direct -0.01% Disposed 1086.3% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 900 $9.04 $8,136 3,074,806 Direct -0.03% Disposed 1085.0% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 400 $9.05 $3,620 3,074,406 Direct -0.01% Disposed 1083.6% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 200 $9.06 $1,812 3,074,206 Direct -0.01% Disposed 1082.3% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 100 $9.07 $907 3,074,106 Direct 0.00% Disposed 1081.0% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 600 $9.08 $5,448 3,073,506 Direct -0.02% Disposed 1079.7% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 600 $9.09 $5,454 3,072,906 Direct -0.02% Disposed 1078.4% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 300 $9.11 $2,733 3,072,606 Direct -0.01% Disposed 1075.9% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 100 $9.12 $912 3,072,506 Direct 0.00% Disposed 1074.6% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 400 $9.13 $3,652 3,072,106 Direct -0.01% Disposed 1073.3% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 800 $9.14 $7,312 3,071,306 Direct -0.03% Disposed 1072.0% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 800 $9.15 $7,320 3,070,506 Direct -0.03% Disposed 1070.7% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 25 $9.16 $229 3,070,481 Direct 0.00% Disposed 1069.4% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 200 $9.17 $1,834 3,070,281 Direct -0.01% Disposed 1068.2% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 400 $9.18 $3,672 3,069,881 Direct -0.01% Disposed 1066.9% (price as of 2026-08-21)
Oct. 25, 2007 HALO S 10b5-1 275 $9.20 $2,530 3,069,606 Direct -0.01% Disposed 1064.3% (price as of 2026-08-21)
Oct. 24, 2007 HALO S 10b5-1 690 $8.91 $6,148 3,083,916 Direct -0.02% Disposed 1102.2% (price as of 2026-08-21)
Oct. 24, 2007 HALO S 10b5-1 854 $8.92 $7,618 3,083,062 Direct -0.03% Disposed 1100.9% (price as of 2026-08-21)
Oct. 24, 2007 HALO S 10b5-1 500 $8.93 $4,465 3,082,562 Direct -0.02% Disposed 1099.6% (price as of 2026-08-21)
Oct. 24, 2007 HALO S 10b5-1 556 $8.94 $4,971 3,082,006 Direct -0.02% Disposed 1098.2% (price as of 2026-08-21)
Oct. 24, 2007 HALO S 10b5-1 1,500 $8.95 $13,425 3,080,506 Direct -0.05% Disposed 1096.9% (price as of 2026-08-21)
Oct. 24, 2007 HALO S 10b5-1 3,040 $8.96 $27,238 3,077,466 Direct -0.10% Disposed 1095.5% (price as of 2026-08-21)
Oct. 24, 2007 HALO S 10b5-1 1,600 $8.97 $14,352 3,075,866 Direct -0.05% Disposed 1094.2% (price as of 2026-08-21)
Oct. 24, 2007 HALO S 10b5-1 500 $8.98 $4,490 3,075,366 Direct -0.02% Disposed 1092.9% (price as of 2026-08-21)
Oct. 24, 2007 HALO S 10b5-1 760 $8.99 $6,832 3,074,606 Direct -0.02% Disposed 1091.5% (price as of 2026-08-21)
Oct. 24, 2007 HALO S 10b5-1 900 $9.00 $8,100 3,073,706 Direct -0.03% Disposed 1090.2% (price as of 2026-08-21)
Oct. 24, 2007 HALO S 10b5-1 400 $9.01 $3,604 3,073,306 Direct -0.01% Disposed 1088.9% (price as of 2026-08-21)
Oct. 24, 2007 HALO S 10b5-1 1,500 $9.02 $13,530 3,071,806 Direct -0.05% Disposed 1087.6% (price as of 2026-08-21)
Oct. 24, 2007 HALO S 10b5-1 600 $9.04 $5,424 3,071,206 Direct -0.02% Disposed 1085.0% (price as of 2026-08-21)
Oct. 24, 2007 HALO S 10b5-1 500 $9.09 $4,545 3,070,706 Direct -0.02% Disposed 1078.4% (price as of 2026-08-21)
Oct. 24, 2007 HALO S 10b5-1 400 $9.10 $3,640 3,070,306 Direct -0.01% Disposed 1077.1% (price as of 2026-08-21)
Oct. 24, 2007 HALO S 10b5-1 500 $9.11 $4,555 3,069,806 Direct -0.02% Disposed 1075.9% (price as of 2026-08-21)
Oct. 24, 2007 HALO S 10b5-1 200 $9.12 $1,824 3,069,606 Direct -0.01% Disposed 1074.6% (price as of 2026-08-21)
Sept. 27, 2007 HALO S 10b5-1 200 $8.76 $1,752 3,034,406 Direct -0.01% Disposed 1122.8% (price as of 2026-08-21)
Sept. 27, 2007 HALO S 10b5-1 700 $8.77 $6,139 3,033,706 Direct -0.02% Disposed 1121.4% (price as of 2026-08-21)
Sept. 27, 2007 HALO S 10b5-1 300 $8.79 $2,637 3,033,406 Direct -0.01% Disposed 1118.7% (price as of 2026-08-21)
Sept. 27, 2007 HALO S 10b5-1 100 $8.80 $880 3,033,306 Direct 0.00% Disposed 1117.3% (price as of 2026-08-21)
Sept. 27, 2007 HALO S 10b5-1 500 $8.81 $4,405 3,032,806 Direct -0.02% Disposed 1115.9% (price as of 2026-08-21)
Sept. 27, 2007 HALO S 10b5-1 1,200 $8.82 $10,584 3,031,606 Direct -0.04% Disposed 1114.5% (price as of 2026-08-21)
Sept. 27, 2007 HALO S 10b5-1 1,400 $8.83 $12,362 3,030,206 Direct -0.05% Disposed 1113.1% (price as of 2026-08-21)
Sept. 27, 2007 HALO S 10b5-1 100 $8.84 $884 3,030,106 Direct 0.00% Disposed 1111.8% (price as of 2026-08-21)
Sept. 27, 2007 HALO S 10b5-1 700 $8.85 $6,195 3,029,406 Direct -0.02% Disposed 1110.4% (price as of 2026-08-21)
Sept. 27, 2007 HALO S 10b5-1 2,100 $8.86 $18,606 3,027,306 Direct -0.07% Disposed 1109.0% (price as of 2026-08-21)
Sept. 27, 2007 HALO S 10b5-1 1,200 $8.87 $10,644 3,026,106 Direct -0.04% Disposed 1107.7% (price as of 2026-08-21)
Sept. 26, 2007 HALO S 10b5-1 300 $8.93 $2,679 3,034,306 Direct -0.01% Disposed 1099.6% (price as of 2026-08-21)
Sept. 26, 2007 HALO S 10b5-1 700 $8.95 $6,265 3,033,606 Direct -0.02% Disposed 1096.9% (price as of 2026-08-21)
Sept. 26, 2007 HALO S 10b5-1 400 $8.96 $3,584 3,033,206 Direct -0.01% Disposed 1095.5% (price as of 2026-08-21)
Sept. 26, 2007 HALO S 10b5-1 400 $8.97 $3,588 3,032,806 Direct -0.01% Disposed 1094.2% (price as of 2026-08-21)
Sept. 26, 2007 HALO S 10b5-1 500 $8.98 $4,490 3,032,306 Direct -0.02% Disposed 1092.9% (price as of 2026-08-21)
Sept. 26, 2007 HALO S 10b5-1 400 $8.99 $3,596 3,031,906 Direct -0.01% Disposed 1091.5% (price as of 2026-08-21)
Sept. 26, 2007 HALO S 10b5-1 1,400 $9.00 $12,600 3,030,506 Direct -0.05% Disposed 1090.2% (price as of 2026-08-21)
Sept. 26, 2007 HALO S 10b5-1 2,200 $9.01 $19,822 3,028,306 Direct -0.07% Disposed 1088.9% (price as of 2026-08-21)
Sept. 26, 2007 HALO S 10b5-1 900 $9.02 $8,118 3,027,406 Direct -0.03% Disposed 1087.6% (price as of 2026-08-21)
Sept. 26, 2007 HALO S 10b5-1 410 $9.04 $3,706 3,026,996 Direct -0.01% Disposed 1085.0% (price as of 2026-08-21)
Sept. 26, 2007 HALO S 10b5-1 1,090 $9.06 $9,875 3,025,906 Direct -0.04% Disposed 1082.3% (price as of 2026-08-21)
Sept. 26, 2007 HALO S 10b5-1 700 $9.07 $6,349 3,025,206 Direct -0.02% Disposed 1081.0% (price as of 2026-08-21)
Sept. 26, 2007 HALO S 10b5-1 700 $9.08 $6,356 3,024,506 Direct -0.02% Disposed 1079.7% (price as of 2026-08-21)
Sept. 26, 2007 HALO S 10b5-1 400 $9.10 $3,640 3,024,106 Direct -0.01% Disposed 1077.1% (price as of 2026-08-21)
Sept. 26, 2007 HALO S 10b5-1 400 $9.11 $3,644 3,023,706 Direct -0.01% Disposed 1075.9% (price as of 2026-08-21)
Sept. 26, 2007 HALO S 10b5-1 1,600 $9.12 $14,592 3,022,106 Direct -0.05% Disposed 1074.6% (price as of 2026-08-21)
Sept. 26, 2007 HALO S 10b5-1 300 $9.14 $2,742 3,021,806 Direct -0.01% Disposed 1072.0% (price as of 2026-08-21)
Sept. 26, 2007 HALO S 10b5-1 300 $9.15 $2,745 3,021,506 Direct -0.01% Disposed 1070.7% (price as of 2026-08-21)
Sept. 26, 2007 HALO S 10b5-1 300 $9.16 $2,748 3,021,206 Direct -0.01% Disposed 1069.4% (price as of 2026-08-21)
Sept. 26, 2007 HALO S 10b5-1 500 $9.17 $4,585 3,020,706 Direct -0.02% Disposed 1068.2% (price as of 2026-08-21)
Sept. 26, 2007 HALO S 10b5-1 600 $9.21 $5,526 3,020,106 Direct -0.02% Disposed 1063.1% (price as of 2026-08-21)
Sept. 26, 2007 HALO S 10b5-1 200 $9.22 $1,844 3,019,906 Direct -0.01% Disposed 1061.8% (price as of 2026-08-21)

Showing latest 100 of 391 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
May 28, 2015 PGEN Option to Purchase Common Stock (Right to Buy) Common Stock (200,000) $22.77 Jan. 6, 2024 200,000 Disposed
Aug. 12, 2013 HALO Option to Purchase Common Stock Common Stock (20,000) $2.05 Oct. 13, 2014 20,000 Disposed
Feb. 2, 2012 HALO Restricted Stock Units Common Stock (96,065) $0.00 Feb. 2, 2022 96,065 Acquired
Feb. 2, 2012 HALO Restricted Stock Units Common Stock (30,000) $0.00 Feb. 2, 2022 30,000 Acquired
Feb. 2, 2012 HALO Option to Purchase Common Stock Common Stock (60,000) $11.29 Feb. 2, 2022 60,000 Acquired
May 5, 2011 HALO Option to Purchase Common Stock Common Stock (2,000) $6.21 May 5, 2021 2,000 Acquired
Feb. 5, 2009 HALO Option to Purchase Common Stock Common Stock (80,000) $6.10 Feb. 5, 2019 80,000 Acquired
Nov. 9, 2007 HALO Option to Purchase Common Stock Common Stock (42,340) $0.43 Nov. 11, 2008 42,340 Disposed
Oct. 25, 2007 HALO Option to Purchase Common Stock Common Stock (15,754) $0.43 Nov. 11, 2008 15,754 Disposed
Oct. 24, 2007 HALO Option to Purchase Common Stock Common Stock (15,747) $0.43 Nov. 11, 2008 15,747 Disposed
Sept. 28, 2007 HALO Option to Purchase Common Stock Common Stock (52,602) $0.43 Nov. 11, 2008 52,602 Disposed
Sept. 27, 2007 HALO Option to Purchase Common Stock Common Stock (15,757) $0.43 Nov. 11, 2008 15,757 Disposed
Sept. 26, 2007 HALO Option to Purchase Common Stock Common Stock (15,746) $0.43 Nov. 11, 2008 15,746 Disposed
Aug. 30, 2007 HALO Options to Purchase Common Stock Common Stock (15,815) $0.43 Nov. 11, 2008 15,815 Disposed
Aug. 29, 2007 HALO Options to Purchase Common Stock Common Stock (15,801) $0.43 Nov. 11, 2008 15,801 Disposed
Aug. 6, 2007 HALO Options to Purchase Common Stock Common Stock (52,767) $0.43 Nov. 11, 2008 52,767 Disposed
Aug. 2, 2007 HALO Options to Purchase Common Stock Common Stock (15,816) $0.43 Nov. 11, 2008 15,816 Disposed
Aug. 2, 2007 HALO Options to Purchase Common Stock Common Stock (15,816) $0.43 Nov. 11, 2008 15,816 Disposed
Aug. 1, 2007 HALO Options to Purchase Common Stock Common Stock (15,850) $0.43 Nov. 11, 2008 15,850 Disposed
Aug. 1, 2007 HALO Options to Purchase Common Stock Common Stock (15,850) $0.43 Nov. 11, 2008 15,850 Disposed
July 9, 2007 HALO Options to Purchase Common Stock Common Stock (41,812) $0.43 Nov. 11, 2008 41,812 Disposed
July 6, 2007 HALO Option to Purchase Common Stock Common Stock (26,128) $0.43 Nov. 11, 2008 26,128 Disposed
July 5, 2007 HALO Option to Purchase Common Stock Common Stock (15,693) $0.43 Nov. 11, 2008 15,693 Disposed
June 12, 2007 HALO Warrant Common Stock (22,241) $0.45 Oct. 20, 2007 22,241 Disposed
June 12, 2007 HALO Options to Purchase Common Stock Common Stock (20,896) $0.43 Nov. 11, 2008 20,896 Disposed
June 7, 2007 HALO Options to Purchase Common Stock Common Stock (20,853) $0.43 Nov. 11, 2008 20,853 Disposed
June 7, 2007 HALO Options to Purchase Common Stock Common Stock (20,853) $0.43 Nov. 11, 2008 20,853 Disposed
June 6, 2007 HALO Options to Purchase Common Stock Common Stock (20,849) $0.43 Nov. 11, 2008 20,849 Disposed
June 6, 2007 HALO Options to Purchase Common Stock Common Stock (20,849) $0.43 Nov. 11, 2008 20,849 Disposed
Feb. 5, 2007 HALO Option to Purchase Common Stock Common (15,729) $7.51 Feb. 5, 2017 15,729 Acquired
Jan. 10, 2005 HALO Options to Purchase Common Stock Common Stock (100,000) $0.43 Nov. 11, 2008 100,000 Disposed
Jan. 10, 2005 HALO Option to Purchase Common Stock Common Stock (100,000) $0.43 Nov. 11, 2008 100,000 Disposed

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

Initial ownership (Form 3) 10 holdings

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

Date Ticker Security Shares Ownership
Feb. 11, 2005 HALO Common Stock 2,953,779 Direct
Feb. 11, 2005 HALO Options to Purchase Common Stock→ Common Stock (1,235,601) 1,235,601 Direct
Feb. 11, 2005 HALO Warrants to Purchase Common Stock (2003 Bridge Financing)→ Common Stock (22,241) 22,241 Direct
March 19, 2004 HALO Common Stock 2,953,779 Direct
March 19, 2004 HALO Common Stock 190,072 Indirect
March 19, 2004 HALO Options to Purchase Common Stock→ Common Stock (230,153) 230,153 Direct
March 19, 2004 HALO Options to Purchase Common Stock→ Common Stock (78,748) 78,748 Direct
March 19, 2004 HALO Warrants to Purchase Common Stock (2003 Bridge Financing→ Common Stock (22,241) 22,241 Direct
March 19, 2004 HALO Warrants to Purchase Common Stock (2003 Bridge Financing)→ Common Stock (22,241) 22,241 Indirect
March 19, 2004 HALO Warrants to Purchase Common Stock [F1]→ Common Stock (10,530) 10,530 Indirect

Compensation (DEF 14A)

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

Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2011 $415,000 $80,000 $7,788 $683,524
Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2014 $494,231 $491,781 $19,967 $14,508,779

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