David Seth Cohen
CIK 1711622 · View on SEC EDGAR ↗
Insider
First SEC filing: July 11, 2017 · Latest: July 11, 2017
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 58 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
58 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 10, 2021 | PRPO | S | 69,962 | $3.99 | $279,148 | 692,092 Direct | -9.18% | Disposed | -65.6% (price as of 2026-08-20) |
| June 10, 2021 | PRPO | S | 69,962 | $3.99 | $279,148 | 750,741 Direct | -8.52% | Disposed | -65.6% (price as of 2026-08-20) |
| May 27, 2021 | PRPO | S | 40,178 | $3.99 | $160,310 | 762,054 Direct | -5.01% | Disposed | -65.6% (price as of 2026-08-20) |
| May 27, 2021 | PRPO | S | 40,178 | $3.99 | $160,310 | 820,703 Direct | -4.67% | Disposed | -65.6% (price as of 2026-08-20) |
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 |
|---|---|---|---|---|---|---|---|
| Jan. 2, 2026 | PRPO | Stock Option (Right to Buy) | Common Stock (1,500) | $23.82 | Jan. 2, 2036 | 1,500 | Acquired |
| Jan. 14, 2025 | PRPO | Stock Option (Right to Buy) | Common Stock (1,000) | $6.06 | Jan. 14, 2035 | 1,000 | Acquired |
| Aug. 31, 2024 | PRPO | Stock Option (Right to Buy) | Common Stock (2,000) | — | Jan. 11, 2032 | 2,000 | Acquired |
| Aug. 31, 2024 | PRPO | Stock Option (Right to Buy) | Common Stock (2,000) | $30.80 | Jan. 11, 2032 | 2,000 | Disposed |
| Aug. 31, 2024 | PRPO | Stock Option (Right to Buy) | Common Stock (1,250) | — | March 8, 2031 | 1,250 | Acquired |
| Aug. 31, 2024 | PRPO | Stock Option (Right to Buy) | Common Stock (1,250) | $64.40 | March 8, 2031 | 1,250 | Disposed |
| Aug. 31, 2024 | PRPO | Stock Option (Right to Buy) | Common Stock (1,250) | — | Jan. 4, 2031 | 1,250 | Acquired |
| Aug. 31, 2024 | PRPO | Stock Option (Right to Buy) | Common Stock (1,250) | $42.00 | Jan. 4, 2031 | 1,250 | Disposed |
| Aug. 31, 2024 | PRPO | Stock Option (Right to Buy) | Common Stock (200) | — | July 2, 2030 | 200 | Acquired |
| Aug. 31, 2024 | PRPO | Stock Option (Right to Buy) | Common Stock (200) | $26.00 | July 2, 2030 | 200 | Disposed |
| Aug. 31, 2024 | PRPO | Stock Option (Right to Buy) | Common Stock (375) | — | Jan. 16, 2030 | 375 | Acquired |
| Aug. 31, 2024 | PRPO | Stock Option (Right to Buy) | Common Stock (375) | $42.80 | Jan. 16, 2030 | 375 | Disposed |
| Aug. 31, 2024 | PRPO | Stock Option (Right to Buy) | Common Stock (250) | — | March 18, 2029 | 250 | Acquired |
| Aug. 31, 2024 | PRPO | Stock Option (Right to Buy) | Common Stock (250) | $45.00 | March 18, 2029 | 250 | Disposed |
| Aug. 31, 2024 | PRPO | Stock Option (Right to Buy) | Common Stock (258) | — | Feb. 16, 2028 | 258 | Acquired |
| Aug. 31, 2024 | PRPO | Stock Option (Right to Buy) | Common Stock (258) | $213.00 | Feb. 16, 2028 | 258 | Disposed |
| Aug. 31, 2024 | PRPO | Stock Option (Right to Buy) | Common Stock (103) | — | Feb. 16, 2028 | 103 | Acquired |
| Aug. 31, 2024 | PRPO | Stock Option (Right to Buy) | Common Stock (103) | $213.00 | Feb. 16, 2028 | 103 | Disposed |
| Aug. 31, 2024 | PRPO | Stock Option (Right to Buy) | Common Stock (23) | — | Aug. 11, 2027 | 23 | Acquired |
| Aug. 31, 2024 | PRPO | Stock Option (Right to Buy) | Common Stock (23) | $408.00 | Aug. 11, 2027 | 23 | Disposed |
| June 21, 2024 | PRPO | Stock Option (Right to Buy) | Common Stock (1,000) | $4.98 | June 21, 2034 | 1,000 | Acquired |
| Jan. 6, 2023 | PRPO | Stock Option (Right to Buy) | Common Stock (30,000) | $0.62 | Jan. 6, 2033 | 30,000 | Acquired |
| Jan. 11, 2022 | PRPO | Stock Option (Right to Buy) | Common Stock (40,000) | $1.54 | Jan. 11, 2032 | 40,000 | Acquired |
| Aug. 3, 2021 | PRPO | Stock Option (Right to Buy) | Common Stock (25,000) | $3.22 | Aug. 3, 2031 | 25,000 | Acquired |
| Jan. 4, 2021 | PRPO | Stock Option (Right to Buy) | Common Stock (25,000) | $2.10 | Jan. 4, 2031 | 25,000 | Acquired |
| July 2, 2020 | PRPO | Stock Option (Right to Buy) | Common Stock (4,000) | $1.30 | July 2, 2030 | 4,000 | Acquired |
| Jan. 16, 2020 | PRPO | Stock Option (Right to Buy) | Common Stock (7,500) | $2.14 | Jan. 16, 2030 | 7,500 | Acquired |
| May 14, 2019 | PRPO | Warrant to Purchase Common Stock | Common Stock (30,869) | $9.56 | May 14, 2029 | 30,869 | Acquired |
| May 14, 2019 | PRPO | 8% Convertible Promissory Note | Common Stock (30,869) | $7.12 | — | — | Acquired |
| April 16, 2019 | PRPO | Warrant | Common Stock (245,785) | $0.36 | Oct. 16, 2024 | 245,785 | Acquired |
| April 16, 2019 | PRPO | 8% Convertible Promissory Note | Common Stock (245,785) | $0.45 | — | — | Acquired |
| April 16, 2019 | PRPO | Warrant to Purchase Common Stock | Common Stock (245,785) | $0.36 | April 16, 2024 | 245,785 | Acquired |
| April 16, 2019 | PRPO | 8% Convertible Promissory Note | Common Stock (245,785) | $0.45 | — | — | Acquired |
| March 18, 2019 | PRPO | Stock Option (Right to Buy) | Common Stock (75,000) | $0.15 | March 18, 2029 | 75,000 | Acquired |
| Dec. 31, 2018 | PRPO | Warrant to Purchase Common Stock | Common Stock (219,781) | $0.36 | Dec. 31, 2023 | 219,781 | Acquired |
| Dec. 31, 2018 | PRPO | 8% Convertible Promissory Note | Common Stock (219,781) | $0.25 | — | — | Acquired |
| Nov. 29, 2018 | PRPO | Warrant | Common Stock (189,466) | $0.36 | May 29, 2024 | 189,466 | Acquired |
| Nov. 29, 2018 | PRPO | 8% Convertible Promissory Note | Common Stock (189,466) | $0.29 | — | — | Acquired |
| Nov. 29, 2018 | PRPO | Warrant to Purchase Common Stock | Common Stock (189,466) | $0.36 | Nov. 29, 2023 | 189,466 | Acquired |
| Nov. 29, 2018 | PRPO | 8% Convertible Promissory Note | Common Stock (189,466) | $0.29 | — | — | Acquired |
| Nov. 29, 2018 | PRPO | Warrant to Purchase Common Stock | Common Stock (189,466) | $0.36 | Nov. 29, 2023 | 189,466 | Acquired |
| Nov. 29, 2018 | PRPO | 8% Convertible Promissory Note | Common Stock (228,937) | $0.24 | — | — | Acquired |
| Feb. 16, 2018 | PRPO | Stock Option (Right to Buy) | Common Stock (77,563) | $0.71 | Feb. 16, 2028 | 77,563 | Acquired |
| Feb. 16, 2018 | PRPO | Stock Option (Right to Buy) | Common Stock (31,025) | $0.71 | Feb. 16, 2028 | 31,025 | Acquired |
| Nov. 8, 2017 | PRPO | Stock Option (Right to Buy) | Common Stock (7,000) | $1.36 | Nov. 8, 2027 | 7,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 5 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| July 11, 2017 | PRPO | Common Stock | 562,708 | Direct |
| July 11, 2017 | PRPO | 8% Convertible Promissory Note→ Common Stock or Series A Senior Convertible Preferred Stock [F1] | — | Direct |
| July 11, 2017 | PRPO | Series A Senior Convertible Preferred Stock→ Common Stock (185,704) | 185,704 | Direct |
| July 11, 2017 | PRPO | Warrant to Purchase Common Stock→ Common Stock (7,500) | 7,500 | Direct |
| July 11, 2017 | PRPO | Call Option (right to buy)→ Common Stock (131,667) | 131,667 | Direct |