Colin Walsh
CIK 1866174 · View on SEC EDGAR ↗
Insider
First SEC filing: Aug. 5, 2026 · Latest: Aug. 5, 2026
On this page
Insider at
Insider transactions
2 buys (P)
23 sells (S)
Net:
$8,033,343
+ 4 non-open-market transactions below
Avg return of open purchases vs now:
17.5%
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
4 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 6, 2026 | ATTO | P | 500,000 | $17.00 | $8,500,000 | 3,020,632 Indirect | +19.84% | Acquired | 29.9% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | P | 85,000 | $21.00 | $1,785,000 | 85,000 Indirect | — | Acquired | 5.2% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | S | 988 | $22.03 | $21,766 | 84,012 Indirect | -1.16% | Disposed | 0.2% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | S | 447 | $21.87 | $9,776 | 83,565 Indirect | -0.53% | Disposed | 1.0% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | S | 1,332 | $22.03 | $29,344 | 82,233 Indirect | -1.59% | Disposed | 0.2% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | S | 200 | $22.05 | $4,410 | 82,033 Indirect | -0.24% | Disposed | 0.2% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | S | 1,556 | $22.06 | $34,325 | 80,477 Indirect | -1.90% | Disposed | 0.1% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | S | 3,402 | $22.02 | $74,912 | 77,075 Indirect | -4.23% | Disposed | 0.3% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | S | 200 | $22.10 | $4,420 | 76,875 Indirect | -0.26% | Disposed | -0.1% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | S | 480 | $21.55 | $10,344 | 76,395 Indirect | -0.62% | Disposed | 2.5% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | S | 100 | $22.11 | $2,211 | 76,295 Indirect | -0.13% | Disposed | -0.1% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | S | 753 | $21.97 | $16,543 | 75,542 Indirect | -0.99% | Disposed | 0.5% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | S | 672 | $22.02 | $14,797 | 74,870 Indirect | -0.89% | Disposed | 0.3% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | S | 6,970 | $22.03 | $153,549 | 67,900 Indirect | -9.31% | Disposed | 0.2% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | S | 400 | $22.02 | $8,808 | 67,500 Indirect | -0.59% | Disposed | 0.3% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | S | 1,180 | $21.84 | $25,771 | 66,320 Indirect | -1.75% | Disposed | 1.1% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | S | 1,040 | $22.05 | $22,932 | 65,280 Indirect | -1.57% | Disposed | 0.2% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | S | 300 | $20.84 | $6,252 | 64,980 Indirect | -0.46% | Disposed | 6.0% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | S | 443 | $21.78 | $9,649 | 64,537 Indirect | -0.68% | Disposed | 1.4% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | S | 200 | $22.05 | $4,410 | 64,337 Indirect | -0.31% | Disposed | 0.2% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | S | 700 | $22.07 | $15,449 | 63,637 Indirect | -1.09% | Disposed | 0.1% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | S | 1,163 | $22.19 | $25,807 | 62,474 Indirect | -1.83% | Disposed | -0.5% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | S | 100 | $21.99 | $2,199 | 62,374 Indirect | -0.16% | Disposed | 0.4% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | S | 6,763 | $21.61 | $146,148 | 55,611 Indirect | -10.84% | Disposed | 2.2% (price as of 2026-08-20) |
| Aug. 5, 2026 | ATTO | S | 76,418 | $21.04 | $1,607,835 | 0 Indirect | -100.00% | Disposed | 5.0% (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 |
|---|---|---|---|---|---|---|---|
| Aug. 6, 2026 | ATTO | Series B Preferred Stock | Common Stock | — | — | 18,181,830 | Disposed |
| Aug. 6, 2026 | ATTO | Series C Preferred Stock | Common Stock | — | — | 4,445,275 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 2 holdings
Securities held when first becoming an insider, per SEC Form 3.