David B. Singer
CIK 1240366 · View on SEC EDGAR ↗
Insider
Activist
First SEC filing: May 26, 2026 · Latest: May 29, 2026
On this page
Insider at
Insider transactions
0 buys (P)
22 sells (S)
Net:
$-258,106,128
+ 30 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
30 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| May 29, 2026 | INFQ | S | 12,310 | $17.91 | $220,472 | 0 Indirect | -100.00% | Disposed | -27.8% (price as of 2026-08-18) |
| May 29, 2026 | INFQ | S | 66,194 | $16.85 | $1,115,369 | 12,310 Indirect | -84.32% | Disposed | -23.3% (price as of 2026-08-18) |
| May 29, 2026 | INFQ | S | 1,541,092 | $16.05 | $24,734,527 | 78,504 Indirect | -95.15% | Disposed | -19.5% (price as of 2026-08-18) |
| May 29, 2026 | INFQ | S | 1,353 | $17.91 | $24,232 | 0 Indirect | -100.00% | Disposed | -27.8% (price as of 2026-08-18) |
| May 29, 2026 | INFQ | S | 7,277 | $16.85 | $122,617 | 1,353 Indirect | -84.32% | Disposed | -23.3% (price as of 2026-08-18) |
| May 29, 2026 | INFQ | S | 169,411 | $16.05 | $2,719,047 | 8,630 Indirect | -95.15% | Disposed | -19.5% (price as of 2026-08-18) |
| May 27, 2026 | INFQ | S | 603,707 | $15.98 | $9,647,238 | 2,429,980 Indirect | -19.90% | Disposed | -19.1% (price as of 2026-08-18) |
| May 27, 2026 | INFQ | S | 1,376,716 | $15.29 | $21,049,988 | 3,033,687 Indirect | -31.22% | Disposed | -15.5% (price as of 2026-08-18) |
| May 27, 2026 | INFQ | S | 332,639 | $15.98 | $5,315,571 | 1,564,070 Indirect | -17.54% | Disposed | -19.1% (price as of 2026-08-18) |
| May 27, 2026 | INFQ | S | 758,561 | $15.29 | $11,598,398 | 1,896,709 Indirect | -28.57% | Disposed | -15.5% (price as of 2026-08-18) |
| May 22, 2026 | INFQ | S | 751,744 | $17.04 | $12,809,718 | 0 Indirect | -100.00% | Disposed | -24.1% (price as of 2026-08-18) |
| May 22, 2026 | INFQ | S | 2,635,848 | $16.70 | $44,018,662 | 4,918,952 Indirect | -34.89% | Disposed | -22.6% (price as of 2026-08-18) |
| May 22, 2026 | INFQ | S | 137,795 | $17.04 | $2,348,027 | 0 Indirect | -100.00% | Disposed | -24.1% (price as of 2026-08-18) |
| May 22, 2026 | INFQ | S | 1,669,369 | $16.70 | $27,878,462 | 3,115,342 Indirect | -34.89% | Disposed | -22.6% (price as of 2026-08-18) |
| May 22, 2026 | INFQ | S | 35,450 | $17.04 | $604,068 | 0 Indirect | -100.00% | Disposed | -24.1% (price as of 2026-08-18) |
| May 22, 2026 | INFQ | S | 19,761 | $17.04 | $336,727 | 0 Indirect | -100.00% | Disposed | -24.1% (price as of 2026-08-18) |
| May 21, 2026 | INFQ | S | 2,128,025 | $14.69 | $31,260,687 | 751,744 Indirect | -73.90% | Disposed | -12.0% (price as of 2026-08-18) |
| May 21, 2026 | INFQ | S | 2,262,112 | $14.69 | $33,230,425 | 7,554,800 Indirect | -23.04% | Disposed | -12.0% (price as of 2026-08-18) |
| May 21, 2026 | INFQ | S | 390,066 | $14.69 | $5,730,070 | 137,795 Indirect | -73.90% | Disposed | -12.0% (price as of 2026-08-18) |
| May 21, 2026 | INFQ | S | 1,432,671 | $14.69 | $21,045,937 | 4,784,711 Indirect | -23.04% | Disposed | -12.0% (price as of 2026-08-18) |
| May 21, 2026 | INFQ | S | 100,350 | $14.69 | $1,474,142 | 35,450 Indirect | -73.90% | Disposed | -12.0% (price as of 2026-08-18) |
| May 21, 2026 | INFQ | S | 55,939 | $14.69 | $821,744 | 19,761 Indirect | -73.90% | Disposed | -12.0% (price as of 2026-08-18) |
| Dec. 31, 2004 | CORT | S | 17,500 | $6.27 | $109,725 | 731,667 Direct | -2.34% | Disposed | 1792.8% (price as of 2026-08-18) |
| Dec. 30, 2004 | CORT | S | 25,649 | $6.48 | $166,206 | 749,167 Direct | -3.31% | Disposed | 1731.5% (price as of 2026-08-18) |
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 |
|---|---|---|---|---|---|---|---|
| April 10, 2026 | INFQ | Stock Option (Right to Buy) | Common Stock (33,928) | $12.59 | April 10, 2036 | 33,928 | Acquired |
| April 10, 2026 | INFQ | Stock Option (Right to Buy) | Common Stock (33,928) | $12.59 | April 10, 2036 | 33,928 | Acquired |
| Feb. 13, 2026 | INFQ | Stock Option (Right to Buy) | Common Stock (34,740) | $0.90 | June 5, 2034 | 34,740 | Acquired |
| Feb. 13, 2026 | INFQ | Stock Option (Right to Buy) | Common Stock (29,950) | $13.22 | Feb. 12, 2036 | 29,950 | Acquired |
| June 17, 2021 | SEER | Stock Option (right to buy) | Class A Common Stock (15,000) | $33.74 | June 17, 2031 | 15,000 | Acquired |
| June 13, 2012 | PACB | Stock Option (right to buy) | Common Stock (25,000) | $1.83 | June 13, 2022 | 25,000 | Acquired |
| June 23, 2011 | PACB | Stock Option (right to buy) | Common Stock (12,500) | $10.58 | June 23, 2021 | 12,500 | Acquired |
| Oct. 26, 2010 | PACB | Stock Option (right to buy) | Common Stock (25,000) | $16.00 | Oct. 26, 2020 | 25,000 | Acquired |
| April 19, 2004 | CORT | Series BB Preferred Stock | Common Stock (12,761) | — | — | 12,761 | Disposed |
| April 19, 2004 | CORT | Series B Preferred Stock | Common Stock (30,000) | — | — | 10,000 | Disposed |
| April 19, 2004 | CORT | Series A Preferred Stock | Common Stock (29,055) | — | — | 9,685 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 23 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Feb. 18, 2026 | INFQ | Common Stock | 75,700 | Indirect |
| Feb. 18, 2026 | INFQ | Common Stock | 135,800 | Indirect |
| Feb. 18, 2026 | INFQ | Common Stock | 6,217,382 | Indirect |
| Feb. 18, 2026 | INFQ | Common Stock | 527,861 | Indirect |
| Feb. 18, 2026 | INFQ | Common Stock | 9,816,912 | Indirect |
| Feb. 18, 2026 | INFQ | Common Stock | 2,879,769 | Indirect |
| Dec. 3, 2020 | SEER | Series A Convertible Preferred Stock→ Class A Common Stock (1,280,724) | 1,280,724 | Indirect |
| Dec. 3, 2020 | SEER | Series B Convertible Preferred Stock→ Class A Common Stock (1,275,928) | 1,275,928 | Indirect |
| Dec. 3, 2020 | SEER | Series C Convertible Preferred Stock→ Class A Common Stock (265,434) | 265,434 | Indirect |
| Dec. 3, 2020 | SEER | Series D Convertible Preferred Stock→ Class A Common Stock (326,269) | 326,269 | Indirect |
| Dec. 3, 2020 | SEER | Series D-1 Convertible Preferred Stock→ Class A Common Stock (242,204) | 242,204 | Indirect |
| Dec. 3, 2020 | SEER | Class B Common Stock→ Class A Common Stock (101,761) | 101,761 | Indirect |
| Dec. 3, 2020 | SEER | Series A Convertible Preferred Stock→ Class A Common Stock (777,593) | 777,593 | Indirect |
| Dec. 3, 2020 | SEER | Series B Convertible Preferred Stock→ Class A Common Stock (700,762) | 700,762 | Indirect |
| Dec. 3, 2020 | SEER | Series C Convertible Preferred Stock→ Class A Common Stock (145,780) | 145,780 | Indirect |
| Dec. 3, 2020 | SEER | Series D Convertible Preferred Stock→ Class A Common Stock (179,192) | 179,192 | Indirect |
| Dec. 3, 2020 | SEER | Series D-1 Convertible Preferred Stock→ Class A Common Stock (131,627) | 131,627 | Indirect |
| Dec. 3, 2020 | SEER | Class B Common Stock→ Class A Common Stock (61,789) | 61,789 | Indirect |
| April 14, 2004 | CORT | Common Stock | — | Direct |
| April 14, 2004 | CORT | Common Stock | 40,000 | Indirect |
| April 14, 2004 | CORT | Series A Preferred Stock→ Common Stock (29,055) | 29,055 | Direct |
| April 14, 2004 | CORT | Series B Preferred Stock→ Common Stock (30,000) | 30,000 | Direct |
| April 14, 2004 | CORT | Series BB Preferred Stock→ Common Stock (12,761) | 12,761 | Direct |