Robert L Engler MD
Insider
First SEC filing: April 27, 2004 · Latest: Feb. 8, 2005
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 14, 2014 | HALO | M | 75,000 | $2.05 | $153,750 | 0 Direct | -100.00% | Disposed | 5240.1% (price as of 2026-10-05) |
| Aug. 14, 2014 | HALO | S | 35,000 | $9.96 | $348,600 | 273,176 Direct | -11.36% | Disposed | 999.1% (price as of 2026-10-05) |
| Aug. 14, 2014 | HALO | M | 75,000 | $2.05 | $153,750 | 308,176 Direct | +32.16% | Acquired | 5240.1% (price as of 2026-10-05) |
| May 15, 2014 | HALO | M | 150,000 | $4.10 | $615,000 | 0 Direct | -100.00% | Disposed | 2570.1% (price as of 2026-10-05) |
| May 15, 2014 | HALO | S | 126,700 | $7.56 | $957,852 | 233,176 Direct | -35.21% | Disposed | 1348.0% (price as of 2026-10-05) |
| May 15, 2014 | HALO | M | 150,000 | $4.10 | $615,000 | 359,876 Direct | +71.47% | Acquired | 2570.1% (price as of 2026-10-05) |
| May 13, 2014 | HALO | A | 24,876 | · | · | 209,876 Direct | +13.45% | Acquired | (price as of 2026-10-05) |
| May 16, 2013 | HALO | A | 20,000 | · | · | 185,000 Direct | +12.12% | Acquired | (price as of 2026-10-05) |
| Nov. 29, 2012 | HALO | P | 15,000 | $5.57 | $83,550 | 165,000 Direct | +10.00% | Acquired | 1865.4% (price as of 2026-10-05) |
| May 3, 2012 | HALO | A | 20,000 | · | · | 150,000 Direct | +15.38% | Acquired | (price as of 2026-10-05) |
| Nov. 14, 2011 | HALO | P | 5,000 | $8.15 | $40,750 | 130,000 Direct | +4.00% | Acquired | 1243.2% (price as of 2026-10-05) |
| May 5, 2011 | HALO | A | 20,000 | · | · | 125,000 Direct | +19.05% | Acquired | (price as of 2026-10-05) |
| May 6, 2010 | HALO | A | 20,000 | · | · | 105,000 Direct | +23.53% | Acquired | (price as of 2026-10-05) |
| May 7, 2009 | HALO | A | 20,000 | · | · | 85,000 Direct | +30.77% | Acquired | (price as of 2026-10-05) |
| Dec. 16, 2008 | HALO | P | 10,000 | $4.38 | $43,800 | 65,000 Direct | +18.18% | Acquired | 2399.4% (price as of 2026-10-05) |
| May 8, 2008 | HALO | A | 15,000 | $4.94 | $74,100 | 55,000 Direct | +37.50% | Acquired | 2116.0% (price as of 2026-10-05) |
| May 8, 2008 | HALO | A | 10,000 | $4.94 | $49,400 | 255,000 Direct | +4.08% | Acquired | 2116.0% (price as of 2026-10-05) |
| May 15, 2007 | HALO | A | 10,000 | $10.37 | $103,700 | 20,000 Direct | +100.00% | Acquired | 955.7% (price as of 2026-10-05) |
| May 15, 2007 | HALO | A | 15,000 | $10.37 | $155,550 | 40,000 Direct | +60.00% | Acquired | 955.7% (price as of 2026-10-05) |
| March 15, 2007 | HALO | S | 6,000 | $8.00 | $48,000 | 25,000 Direct | -19.35% | Disposed | 1268.4% (price as of 2026-10-05) |
| March 15, 2007 | HALO | S | 2,000 | $8.02 | $16,040 | 31,000 Direct | -6.06% | Disposed | 1265.0% (price as of 2026-10-05) |
| March 15, 2007 | HALO | S | 3,000 | $8.03 | $24,090 | 33,000 Direct | -8.33% | Disposed | 1263.3% (price as of 2026-10-05) |
| March 15, 2007 | HALO | S | 3,900 | $8.05 | $31,395 | 36,000 Direct | -9.77% | Disposed | 1259.9% (price as of 2026-10-05) |
| March 15, 2007 | HALO | S | 100 | $8.06 | $806 | 39,900 Direct | -0.25% | Disposed | 1258.2% (price as of 2026-10-05) |
| March 15, 2007 | HALO | S | 10,000 | $8.10 | $81,000 | 40,000 Direct | -20.00% | Disposed | 1251.5% (price as of 2026-10-05) |
| May 4, 2006 | HALO | A | 10,000 | $2.80 | $28,000 | 10,000 Direct | · | Acquired | 3809.7% (price as of 2026-10-05) |
| May 4, 2006 | HALO | A | 15,000 | $2.80 | $42,000 | 50,000 Direct | +42.86% | Acquired | 3809.7% (price as of 2026-10-05) |
| May 24, 2005 | HALO | P | 7,000 | $1.99 | $13,930 | 35,000 Direct | +25.00% | Acquired | 5401.1% (price as of 2026-10-05) |
| May 24, 2005 | HALO | P | 2,600 | $1.98 | $5,148 | 28,000 Direct | +10.24% | Acquired | 5428.9% (price as of 2026-10-05) |
| May 24, 2005 | HALO | P | 1,400 | $1.97 | $2,758 | 25,400 Direct | +5.83% | Acquired | 5457.0% (price as of 2026-10-05) |
| May 24, 2005 | HALO | P | 12,000 | $1.93 | $23,160 | 24,000 Direct | +100.00% | Acquired | 5572.2% (price as of 2026-10-05) |
| May 24, 2005 | HALO | P | 2,000 | $1.93 | $3,860 | 12,000 Direct | +20.00% | Acquired | 5572.2% (price as of 2026-10-05) |
| Aug. 18, 2004 | HALO | P | 10,000 | $1.60 | $16,000 | 10,000 Direct | · | Acquired | 6742.0% (price as of 2026-10-05) |
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. 14, 2014 | HALO | Options to Purchase Common Stock | Common Stock | $2.05 | Oct. 13, 2014 | 75,000 | Disposed |
| May 15, 2014 | HALO | Option to Purchase Common Stock (NSO) | Common Stock | $4.10 | May 21, 2014 | 150,000 | Disposed |
| May 8, 2008 | HALO | Options to purchase common stock | Common Stock | $4.94 | May 8, 2018 | 10,000 | Acquired |
| May 15, 2007 | HALO | Options to purchase common stock. | Common Stock | $10.37 | May 15, 2017 | 10,000 | Acquired |
| May 4, 2006 | HALO | Option to Purchase Common Stock | Common Stock | $2.80 | May 4, 2006 | 10,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| April 27, 2004 | HALO | Common Stock | 0 | Direct |