DAVID B SINGER
CIK 1240366 · last filed 2026-05-29
DAVID B SINGER is a corporate insider who has filed 28 SEC Form 4 insider transactions across 6 companies since 2007. The most recent filing, for INFQ.WS, was dated May 29, 2026. Across all open-market trades the lifetime net is −$258.1M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $3.3M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$3.33M
6
28
-$258.14M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| INFQ.WS | Director | 0 | $7.02 | $0 | -$258.14M | 7 | 2026-05-29 |
| CASTLIGHT HEALTH, INC. (CSLT) Delisted | Director | 0 | $2.05 | $0 | $0 | 8 | 2022-02-18 |
| 1Life Healthcare Inc (ONEM) Delisted | Director | 264 | $16.47 | $4.3K | $0 | 6 | 2021-07-19 |
| SEER | Director | 1,934,954 | $1.72 | $3.33M | $0 | 3 | 2021-06-22 |
| PACB | Director | — | $1.31 | — | $0 | 2 | 2012-06-15 |
| AFFYMETRIX INC (AFFX) Delisted | Director | — | — | — | $0 | 1 | 2007-06-15 |
Recent Filings
28 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-29 | INFQ.WS | Mixed | −3,672,005 | -$28.94M | EDGAR |
| 2026-05-29 | INFQ.WS | Mixed | −3,606,778 | -$47.60M | EDGAR |
| 2026-05-28 | INFQ.WS | Other (J) | −3,566,534 | $0 | EDGAR |
| 2026-05-27 | INFQ.WS | Sell (S) | −11,619,130 | -$181.60M | EDGAR |
| 2026-04-15 | INFQ.WS | Grant (A) | — | $0 | EDGAR |
| 2026-04-14 | INFQ.WS | Grant (A) | — | $0 | EDGAR |
| 2026-02-18 | INFQ.WS | Grant (A) | — | $0 | EDGAR |
| 2022-02-18 | CASTLIGHT HEALTH, INC. (CSLT) Delisted | Disp (D) | −405,184 | $0 | EDGAR |
| 2021-07-19 | 1Life Healthcare Inc (ONEM) Delisted | Grant (A) | +264 | $0 | EDGAR |
| 2021-06-22 | SEER | Grant (A) | — | $0 | EDGAR |