Mark Horowitz
CIK 1192508 · View on SEC EDGAR ↗
Insider
First SEC filing: Jan. 10, 2006 · Latest: Jan. 10, 2006
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 19 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
19 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Nov. 1, 2011 | RMBS | S 10b5-1 | 20,000 | $17.30 | $346,000 | 781,831 Indirect | -2.49% | Disposed | 417.4% (price as of 2026-08-19) |
| Oct. 13, 2011 | RMBS | S 10b5-1 | 20,000 | $16.00 | $320,000 | 801,831 Indirect | -2.43% | Disposed | 459.4% (price as of 2026-08-19) |
| May 2, 2011 | RMBS | S 10b5-1 | 20,000 | $19.59 | $391,800 | 821,831 Indirect | -2.38% | Disposed | 356.9% (price as of 2026-08-19) |
| April 1, 2011 | RMBS | S 10b5-1 | 20,000 | $19.61 | $392,200 | 841,831 Indirect | -2.32% | Disposed | 356.5% (price as of 2026-08-19) |
| March 1, 2011 | RMBS | S 10b5-1 | 20,000 | $20.29 | $405,800 | 834,976 Indirect | -2.34% | Disposed | 341.2% (price as of 2026-08-19) |
| Feb. 1, 2011 | RMBS | S 10b5-1 | 20,000 | $20.80 | $416,000 | 854,976 Indirect | -2.29% | Disposed | 330.3% (price as of 2026-08-19) |
| Jan. 3, 2011 | RMBS | S 10b5-1 | 20,000 | $20.65 | $413,000 | 874,976 Indirect | -2.23% | Disposed | 333.5% (price as of 2026-08-19) |
| Dec. 1, 2010 | RMBS | S 10b5-1 | 20,000 | $20.20 | $404,000 | 894,976 Indirect | -2.19% | Disposed | 343.1% (price as of 2026-08-19) |
| Nov. 1, 2010 | RMBS | S 10b5-1 | 20,000 | $19.74 | $394,800 | 914,976 Indirect | -2.14% | Disposed | 353.4% (price as of 2026-08-19) |
| Aug. 2, 2010 | RMBS | S 10b5-1 | 20,000 | $19.50 | $390,000 | 934,976 Indirect | -2.09% | Disposed | 359.0% (price as of 2026-08-19) |
| July 1, 2010 | RMBS | S 10b5-1 | 20,000 | $17.24 | $344,800 | 954,976 Indirect | -2.05% | Disposed | 419.2% (price as of 2026-08-19) |
| June 1, 2010 | RMBS | S 10b5-1 | 20,000 | $23.29 | $465,800 | 974,976 Indirect | -2.01% | Disposed | 284.3% (price as of 2026-08-19) |
| May 3, 2010 | RMBS | S 10b5-1 | 20,000 | $24.59 | $491,800 | 7,239 Indirect | -73.42% | Disposed | 264.0% (price as of 2026-08-19) |
| April 1, 2010 | RMBS | S 10b5-1 | 20,000 | $22.23 | $444,600 | 27,239 Indirect | -42.34% | Disposed | 302.7% (price as of 2026-08-19) |
| March 1, 2010 | RMBS | S 10b5-1 | 20,000 | $22.14 | $442,800 | 47,239 Indirect | -29.74% | Disposed | 304.3% (price as of 2026-08-19) |
| Feb. 1, 2010 | RMBS | S 10b5-1 | 20,000 | $22.36 | $447,200 | 67,239 Indirect | -22.93% | Disposed | 300.3% (price as of 2026-08-19) |
| Jan. 4, 2010 | RMBS | S 10b5-1 | 1,567 | $22.51 | $35,273 | 87,239 Indirect | -1.76% | Disposed | 297.6% (price as of 2026-08-19) |
| Jan. 4, 2010 | RMBS | S 10b5-1 | 1,100 | $23.32 | $25,652 | 88,806 Indirect | -1.22% | Disposed | 283.8% (price as of 2026-08-19) |
| Jan. 4, 2010 | RMBS | S 10b5-1 | 17,333 | $24.73 | $428,645 | 89,906 Indirect | -16.16% | Disposed | 261.9% (price as of 2026-08-19) |
| Dec. 1, 2009 | RMBS | S 10b5-1 | 20,000 | $18.13 | $362,600 | 107,239 Indirect | -15.72% | Disposed | 393.7% (price as of 2026-08-19) |
| Nov. 2, 2009 | RMBS | S 10b5-1 | 20,000 | $15.95 | $319,000 | 127,239 Indirect | -13.58% | Disposed | 461.2% (price as of 2026-08-19) |
| Oct. 1, 2009 | RMBS | S 10b5-1 | 104 | $17.33 | $1,802 | 167,135 Indirect | -0.06% | Disposed | 416.5% (price as of 2026-08-19) |
| Oct. 1, 2009 | RMBS | S 10b5-1 | 19,896 | $16.69 | $332,064 | 147,239 Indirect | -11.90% | Disposed | 436.3% (price as of 2026-08-19) |
| Sept. 1, 2009 | RMBS | S 10b5-1 | 12,800 | $16.60 | $212,480 | 174,439 Indirect | -6.84% | Disposed | 439.2% (price as of 2026-08-19) |
| Sept. 1, 2009 | RMBS | S 10b5-1 | 7,200 | $17.27 | $124,344 | 167,239 Indirect | -4.13% | Disposed | 418.3% (price as of 2026-08-19) |
| Aug. 5, 2009 | RMBS | S 10b5-1 | 20,000 | $16.69 | $333,800 | 187,239 Indirect | -9.65% | Disposed | 436.3% (price as of 2026-08-19) |
| Dec. 11, 2008 | RMBS | S 10b5-1 | 20,000 | $13.54 | $270,800 | 207,239 Indirect | -8.80% | Disposed | 561.1% (price as of 2026-08-19) |
| Dec. 10, 2008 | RMBS | S 10b5-1 | 20,000 | $13.41 | $268,200 | 227,239 Indirect | -8.09% | Disposed | 567.5% (price as of 2026-08-19) |
| Dec. 9, 2008 | RMBS | S 10b5-1 | 20,000 | $13.00 | $260,000 | 247,239 Indirect | -7.48% | Disposed | 588.5% (price as of 2026-08-19) |
| Aug. 5, 2008 | RMBS | S 10b5-1 | 20,000 | $15.08 | $301,600 | 267,239 Indirect | -6.96% | Disposed | 493.6% (price as of 2026-08-19) |
| Aug. 4, 2008 | RMBS | S 10b5-1 | 20,000 | $15.43 | $308,600 | 287,239 Indirect | -6.51% | Disposed | 480.1% (price as of 2026-08-19) |
| Aug. 1, 2008 | RMBS | S 10b5-1 | 20,000 | $15.98 | $319,600 | 307,239 Indirect | -6.11% | Disposed | 460.1% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 225 | $23.14 | $5,206 | 327,239 Indirect | -0.07% | Disposed | 286.8% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 600 | $23.15 | $13,890 | 327,464 Indirect | -0.18% | Disposed | 286.7% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 400 | $23.16 | $9,264 | 328,064 Indirect | -0.12% | Disposed | 286.5% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 1,000 | $23.17 | $23,170 | 328,464 Indirect | -0.30% | Disposed | 286.3% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 1,900 | $23.18 | $44,042 | 329,464 Indirect | -0.57% | Disposed | 286.2% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 2,000 | $23.19 | $46,380 | 331,364 Indirect | -0.60% | Disposed | 286.0% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 1,300 | $23.20 | $30,160 | 333,364 Indirect | -0.39% | Disposed | 285.8% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 2,500 | $23.21 | $58,025 | 334,664 Indirect | -0.74% | Disposed | 285.7% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 2,100 | $23.22 | $48,762 | 337,164 Indirect | -0.62% | Disposed | 285.5% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 1,745 | $23.23 | $40,536 | 339,264 Indirect | -0.51% | Disposed | 285.3% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 2,301 | $23.24 | $53,475 | 341,009 Indirect | -0.67% | Disposed | 285.2% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 5,355 | $23.25 | $124,504 | 343,310 Indirect | -1.54% | Disposed | 285.0% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 2,000 | $23.26 | $46,520 | 348,665 Indirect | -0.57% | Disposed | 284.8% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 3,175 | $23.27 | $73,882 | 350,665 Indirect | -0.90% | Disposed | 284.7% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 3,200 | $23.28 | $74,496 | 353,840 Indirect | -0.90% | Disposed | 284.5% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 1,800 | $23.29 | $41,922 | 357,040 Indirect | -0.50% | Disposed | 284.3% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 1,600 | $23.30 | $37,280 | 358,840 Indirect | -0.44% | Disposed | 284.2% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 1,900 | $23.31 | $44,289 | 360,440 Indirect | -0.52% | Disposed | 284.0% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 799 | $23.32 | $18,633 | 362,340 Indirect | -0.22% | Disposed | 283.8% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 300 | $23.33 | $6,999 | 363,139 Indirect | -0.08% | Disposed | 283.7% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 900 | $23.34 | $21,006 | 363,439 Indirect | -0.25% | Disposed | 283.5% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 1,900 | $23.35 | $44,365 | 364,339 Indirect | -0.52% | Disposed | 283.3% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 300 | $23.36 | $7,008 | 366,239 Indirect | -0.08% | Disposed | 283.2% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 400 | $23.37 | $9,348 | 366,539 Indirect | -0.11% | Disposed | 283.0% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 2,200 | $23.39 | $51,458 | 366,939 Indirect | -0.60% | Disposed | 282.7% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 1,400 | $23.40 | $32,760 | 369,139 Indirect | -0.38% | Disposed | 282.5% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 1,000 | $23.41 | $23,410 | 370,539 Indirect | -0.27% | Disposed | 282.4% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 700 | $23.42 | $16,394 | 371,539 Indirect | -0.19% | Disposed | 282.2% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 800 | $23.43 | $18,744 | 372,239 Indirect | -0.21% | Disposed | 282.0% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 900 | $23.44 | $21,096 | 373,039 Indirect | -0.24% | Disposed | 281.9% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 1,800 | $23.45 | $42,210 | 373,939 Indirect | -0.48% | Disposed | 281.7% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 1,400 | $23.46 | $32,844 | 375,739 Indirect | -0.37% | Disposed | 281.5% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 1,590 | $23.47 | $37,317 | 377,139 Indirect | -0.42% | Disposed | 281.4% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 1,310 | $23.48 | $30,759 | 378,729 Indirect | -0.34% | Disposed | 281.2% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 200 | $23.49 | $4,698 | 380,039 Indirect | -0.05% | Disposed | 281.1% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 1,000 | $23.50 | $23,500 | 380,239 Indirect | -0.26% | Disposed | 280.9% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 200 | $23.51 | $4,702 | 381,239 Indirect | -0.05% | Disposed | 280.7% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 200 | $23.52 | $4,704 | 381,439 Indirect | -0.05% | Disposed | 280.6% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 200 | $23.53 | $4,706 | 381,639 Indirect | -0.05% | Disposed | 280.4% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 1,000 | $23.54 | $23,540 | 381,839 Indirect | -0.26% | Disposed | 280.2% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 1,600 | $23.55 | $37,680 | 382,839 Indirect | -0.42% | Disposed | 280.1% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 1,400 | $23.57 | $32,998 | 384,439 Indirect | -0.36% | Disposed | 279.8% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 400 | $23.58 | $9,432 | 385,839 Indirect | -0.10% | Disposed | 279.6% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 800 | $23.59 | $18,872 | 386,239 Indirect | -0.21% | Disposed | 279.4% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 100 | $23.60 | $2,360 | 387,039 Indirect | -0.03% | Disposed | 279.3% (price as of 2026-08-19) |
| May 5, 2008 | RMBS | S 10b5-1 | 100 | $23.64 | $2,364 | 387,139 Indirect | -0.03% | Disposed | 278.6% (price as of 2026-08-19) |
| July 1, 2005 | RMBS | S 10b5-1 | 23,692 | $13.39 | $317,236 | 1,374,976 Direct | -1.69% | Disposed | 568.5% (price as of 2026-08-19) |
| June 1, 2005 | RMBS | S 10b5-1 | 23,692 | $15.41 | $365,094 | 1,398,668 Direct | -1.67% | Disposed | 480.9% (price as of 2026-08-19) |
| May 2, 2005 | RMBS | S 10b5-1 | 23,692 | $14.23 | $337,137 | 1,422,360 Direct | -1.64% | Disposed | 529.0% (price as of 2026-08-19) |
Showing latest 100 of 124 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 |
|---|---|---|---|---|---|---|---|
| March 15, 2011 | RMBS | Director Stock Option | Common Stock (20,000) | $15.80 | March 16, 2011 | 20,000 | Disposed |
| Feb. 1, 2011 | RMBS | Employee Stock Option (right to buy) | Common Stock (8,000) | $20.93 | Feb. 1, 2021 | 8,000 | Acquired |
| Feb. 1, 2010 | RMBS | Employee Stock Option (right to buy) | Common Stock (10,000) | $22.72 | Feb. 1, 2020 | 10,000 | Acquired |
| Feb. 2, 2009 | RMBS | Employee Stock Option (right to buy) | Common Stock (16,691) | $8.55 | Feb. 2, 2019 | 16,691 | Acquired |
| Feb. 2, 2009 | RMBS | Restricted Stock Units | Common Stock (3,000) | — | — | 3,000 | Disposed |
| Feb. 1, 2008 | RMBS | Restricted Stock Units | Common Stock (12,000) | — | — | 12,000 | Acquired |
| Feb. 1, 2007 | RMBS | Employee Stock Option | Common Stock (16,000) | $18.69 | Feb. 1, 2017 | 16,000 | Acquired |
| Jan. 6, 2006 | RMBS | Employee Stock Option 01 | Common Stock (20,000) | $22.94 | Jan. 6, 2016 | 20,000 | Acquired |
| Oct. 1, 2004 | RMBS | Director Stock Option 03 | Common Stock (20,000) | $16.07 | Oct. 1, 2014 | 20,000 | Acquired |
| Oct. 1, 2003 | RMBS | Employee Stock Option | CS (20,000) | $17.04 | Oct. 1, 2013 | 20,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).