Insider at

04

Insider transactions

05
0 buys (P) 28 sells (S) Net: $-685,782 + 31 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

31 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
Sept. 2, 2026 ATOM S 10b5-1 6,312 $3.87 $24,427 258,036 Direct -2.39% Disposed 21.7% (price as of 2026-10-02)
Sept. 1, 2026 ATOM S 10b5-1 1,000 $4.05 $4,050 269,715 Direct -0.37% Disposed 16.3% (price as of 2026-10-02)
Sept. 1, 2026 ATOM S 10b5-1 2,192 $4.05 $8,878 267,523 Direct -0.81% Disposed 16.3% (price as of 2026-10-02)
Sept. 1, 2026 ATOM S 10b5-1 889 $4.05 $3,600 266,634 Direct -0.33% Disposed 16.3% (price as of 2026-10-02)
Sept. 1, 2026 ATOM S 10b5-1 1,515 $4.05 $6,136 265,119 Direct -0.57% Disposed 16.3% (price as of 2026-10-02)
Sept. 1, 2026 ATOM S 10b5-1 771 $4.05 $3,123 264,348 Direct -0.29% Disposed 16.3% (price as of 2026-10-02)
Aug. 3, 2026 ATOM S 10b5-1 1,000 $5.05 $5,050 270,715 Direct -0.37% Disposed -6.7% (price as of 2026-10-02)
July 1, 2026 ATOM S 10b5-1 1,000 $8.40 $8,400 271,715 Direct -0.37% Disposed -43.9% (price as of 2026-10-02)
June 15, 2026 ATOM S 10b5-1 8,182 $9.46 $77,402 272,715 Direct -2.91% Disposed -50.2% (price as of 2026-10-02)
June 9, 2026 ATOM S 10b5-1 10,000 $8.75 $87,500 268,909 Direct -3.59% Disposed -46.2% (price as of 2026-10-02)
June 9, 2026 ATOM S 10b5-1 8,012 $8.75 $70,105 270,897 Direct -2.87% Disposed -46.2% (price as of 2026-10-02)
June 8, 2026 ATOM S 10b5-1 10,000 $8.20 $82,000 277,950 Direct -3.47% Disposed -42.6% (price as of 2026-10-02)
June 8, 2026 ATOM S 10b5-1 8,863 $8.20 $72,677 279,087 Direct -3.08% Disposed -42.6% (price as of 2026-10-02)
June 8, 2026 ATOM S 10b5-1 7,313 $8.50 $62,160 279,889 Direct -2.55% Disposed -44.6% (price as of 2026-10-02)
June 8, 2026 ATOM S 10b5-1 9,980 $8.20 $81,836 269,909 Direct -3.57% Disposed -42.6% (price as of 2026-10-02)
June 8, 2026 ATOM S 10b5-1 1,000 $8.20 $8,200 268,909 Direct -0.37% Disposed -42.6% (price as of 2026-10-02)
June 1, 2026 ATOM S 10b5-1 783 $9.52 $7,454 282,620 Direct -0.28% Disposed -50.5% (price as of 2026-10-02)
June 1, 2026 ATOM S 10b5-1 2,227 $9.52 $21,201 280,393 Direct -0.79% Disposed -50.5% (price as of 2026-10-02)
June 1, 2026 ATOM S 10b5-1 1,539 $9.52 $14,651 278,854 Direct -0.55% Disposed -50.5% (price as of 2026-10-02)
June 1, 2026 ATOM S 10b5-1 904 $9.51 $8,597 277,950 Direct -0.32% Disposed -50.5% (price as of 2026-10-02)
March 2, 2026 ATOM S 10b5-1 426 $4.95 $2,109 172,452 Direct -0.25% Disposed -4.8% (price as of 2026-10-02)
March 2, 2026 ATOM S 10b5-1 863 $4.95 $4,272 171,589 Direct -0.50% Disposed -4.8% (price as of 2026-10-02)
March 2, 2026 ATOM S 10b5-1 995 $4.95 $4,925 170,594 Direct -0.58% Disposed -4.8% (price as of 2026-10-02)
March 2, 2026 ATOM S 10b5-1 1,695 $4.95 $8,390 168,899 Direct -0.99% Disposed -4.8% (price as of 2026-10-02)
Dec. 1, 2025 ATOM S 10b5-1 784 $2.39 $1,874 188,892 Direct -0.41% Disposed 97.1% (price as of 2026-10-02)
Dec. 1, 2025 ATOM S 10b5-1 904 $2.39 $2,161 187,988 Direct -0.48% Disposed 97.1% (price as of 2026-10-02)
Dec. 1, 2025 ATOM S 10b5-1 1,540 $2.39 $3,681 186,448 Direct -0.82% Disposed 97.1% (price as of 2026-10-02)
Dec. 1, 2025 ATOM S 10b5-1 386 $2.39 $923 186,062 Direct -0.21% Disposed 97.1% (price as of 2026-10-02)
June 11, 2025 ATOM S 10b5-1 4,196 $6.13 $25,721 197,409 Direct -2.08% Disposed -23.2% (price as of 2026-10-02)
June 2, 2025 ATOM S 767 $6.00 $4,602 204,375 Direct -0.37% Disposed -21.5% (price as of 2026-10-02)
June 2, 2025 ATOM S 885 $6.00 $5,310 203,490 Direct -0.43% Disposed -21.5% (price as of 2026-10-02)
June 2, 2025 ATOM S 378 $6.00 $2,268 203,112 Direct -0.19% Disposed -21.5% (price as of 2026-10-02)
June 2, 2025 ATOM S 1,507 $6.00 $9,042 201,605 Direct -0.74% Disposed -21.5% (price as of 2026-10-02)
March 4, 2025 ATOM S 10b5-1 2,654 $5.13 $13,615 205,142 Direct -1.28% Disposed -8.2% (price as of 2026-10-02)
March 3, 2025 ATOM S 10b5-1 755 $5.91 $4,462 209,215 Direct -0.36% Disposed -20.3% (price as of 2026-10-02)
March 3, 2025 ATOM S 10b5-1 871 $5.91 $5,148 208,344 Direct -0.42% Disposed -20.3% (price as of 2026-10-02)
March 3, 2025 ATOM S 10b5-1 372 $5.91 $2,199 207,972 Direct -0.18% Disposed -20.3% (price as of 2026-10-02)
March 3, 2025 ATOM S 10b5-1 176 $5.91 $1,040 207,796 Direct -0.08% Disposed -20.3% (price as of 2026-10-02)
Dec. 10, 2024 ATOM S 10b5-1 2,628 $7.56 $19,868 127,866 Direct -2.01% Disposed -37.7% (price as of 2026-10-02)
Dec. 2, 2024 ATOM S 179 $6.06 $1,085 132,515 Direct -0.13% Disposed -22.3% (price as of 2026-10-02)
Dec. 2, 2024 ATOM S 764 $6.06 $4,630 131,751 Direct -0.58% Disposed -22.3% (price as of 2026-10-02)
Dec. 2, 2024 ATOM S 376 $6.06 $2,279 131,375 Direct -0.29% Disposed -22.3% (price as of 2026-10-02)
Dec. 2, 2024 ATOM S 881 $6.06 $5,339 130,494 Direct -0.67% Disposed -22.3% (price as of 2026-10-02)
Sept. 3, 2024 ATOM S 184 $2.58 $475 134,779 Direct -0.14% Disposed 82.6% (price as of 2026-10-02)
Sept. 3, 2024 ATOM S 388 $2.58 $1,001 134,391 Direct -0.29% Disposed 82.6% (price as of 2026-10-02)
Sept. 3, 2024 ATOM S 788 $2.58 $2,033 133,603 Direct -0.59% Disposed 82.6% (price as of 2026-10-02)
Sept. 3, 2024 ATOM S 909 $2.58 $2,345 132,694 Direct -0.68% Disposed 82.6% (price as of 2026-10-02)
June 4, 2024 ATOM S 10b5-1 1,578 $4.04 $6,375 134,963 Direct -1.16% Disposed 16.6% (price as of 2026-10-02)
June 3, 2024 ATOM S 10b5-1 181 $4.13 $748 138,549 Direct -0.13% Disposed 14.0% (price as of 2026-10-02)
June 3, 2024 ATOM S 10b5-1 376 $4.13 $1,553 138,173 Direct -0.27% Disposed 14.0% (price as of 2026-10-02)
June 3, 2024 ATOM S 10b5-1 758 $4.13 $3,131 137,415 Direct -0.55% Disposed 14.0% (price as of 2026-10-02)
June 3, 2024 ATOM S 10b5-1 874 $4.13 $3,610 136,541 Direct -0.64% Disposed 14.0% (price as of 2026-10-02)
March 4, 2024 ATOM S 10b5-1 3,294 $6.83 $22,498 138,730 Direct -2.32% Disposed -31.0% (price as of 2026-10-02)
March 1, 2024 ATOM S 10b5-1 179 $6.20 $1,110 144,584 Direct -0.12% Disposed -24.0% (price as of 2026-10-02)
March 1, 2024 ATOM S 10b5-1 375 $6.20 $2,325 144,209 Direct -0.26% Disposed -24.0% (price as of 2026-10-02)
March 1, 2024 ATOM S 10b5-1 761 $6.20 $4,718 143,448 Direct -0.53% Disposed -24.0% (price as of 2026-10-02)
March 1, 2024 ATOM S 10b5-1 1,424 $6.20 $8,829 142,024 Direct -0.99% Disposed -24.0% (price as of 2026-10-02)
Dec. 4, 2023 ATOM S 10b5-1 3,251 $7.16 $23,277 113,803 Direct -2.78% Disposed -34.2% (price as of 2026-10-02)
Dec. 1, 2023 ATOM S 10b5-1 181 $6.67 $1,207 119,655 Direct -0.15% Disposed -29.4% (price as of 2026-10-02)
Dec. 1, 2023 ATOM S 10b5-1 381 $6.67 $2,541 119,274 Direct -0.32% Disposed -29.4% (price as of 2026-10-02)
Dec. 1, 2023 ATOM S 10b5-1 1,447 $6.67 $9,651 117,827 Direct -1.21% Disposed -29.4% (price as of 2026-10-02)
Dec. 1, 2023 ATOM S 10b5-1 773 $6.67 $5,156 117,054 Direct -0.66% Disposed -29.4% (price as of 2026-10-02)
Dec. 1, 2023 ATOM S 10b5-1 2,882 $6.67 $19,223 117,054 Direct -2.40% Disposed -29.4% (price as of 2026-10-02)
Sept. 15, 2023 ATOM S 10b5-1 10,000 $5.75 $57,500 123,140 Direct -7.51% Disposed -18.1% (price as of 2026-10-02)
Sept. 15, 2023 ATOM S 10b5-1 3,304 $5.75 $18,998 119,836 Direct -2.68% Disposed -18.1% (price as of 2026-10-02)
Sept. 1, 2023 ATOM S 758 $6.28 $4,760 125,111 Direct -0.60% Disposed -25.0% (price as of 2026-10-02)
Sept. 1, 2023 ATOM S 1,419 $6.28 $8,911 123,692 Direct -1.13% Disposed -25.0% (price as of 2026-10-02)
Sept. 1, 2023 ATOM S 373 $6.28 $2,342 123,319 Direct -0.30% Disposed -25.0% (price as of 2026-10-02)
Sept. 1, 2023 ATOM S 179 $6.28 $1,124 123,140 Direct -0.15% Disposed -25.0% (price as of 2026-10-02)

Showing latest 100 of 211 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.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
June 15, 2026 ATOM Incentive Stock Option (right to buy) Common Stock (10,000) $7.65 Oct. 12, 2026 10,000 Disposed
June 9, 2026 ATOM Incentive Stock Option (right to buy) Common Stock (10,000) $7.01 March 20, 2027 10,000 Disposed
June 9, 2026 ATOM Non-Qualified Stock Option (right to buy) Common Stock (10,000) $7.01 March 20, 2027 10,000 Disposed
June 8, 2026 ATOM Incentive Stock Option (right to buy) Common Stock (10,000) $7.01 March 20, 2027 10,000 Disposed
June 8, 2026 ATOM Incentive Stock Option (right to buy) Common Stock (8,115) $7.65 Oct. 12, 2026 8,115 Disposed
June 8, 2026 ATOM Non-Qualified Stock Option (right to buy) Common Stock (10,000) $7.01 March 20, 2027 10,000 Disposed
March 11, 2026 ATOM Performance Stock Option (right to buy) Common Stock (32,868) $5.10 March 11, 2036 32,868 Acquired
March 11, 2026 ATOM Performance Stock Option (right to buy) Common Stock (32,868) $5.10 March 11, 2036 32,868 Acquired
March 11, 2026 ATOM Performance Stock Option (right to buy) Common Stock (65,736) $5.10 March 11, 2036 65,736 Acquired
Dec. 11, 2024 ATOM Incentive Stock Option (right to buy) Common Stock (3,000) $3.90 Feb. 27, 2029 3,000 Disposed
Feb. 21, 2024 ATOM Incentive Stock Option (right to buy) Common Stock (15,885) $6.46 Feb. 21, 2034 15,885 Acquired
Feb. 21, 2024 ATOM Non-Qualified Stock Option (right to buy) Common Stock (44,899) $6.46 Feb. 21, 2034 44,899 Acquired
Dec. 1, 2023 ATOM Stock Option (right to buy) Common Stock (2,882) $3.90 Feb. 27, 2029 2,882 Disposed
Sept. 15, 2023 ATOM Stock Option (right to buy) Common Stock (10,000) $3.90 Feb. 27, 2029 10,000 Disposed
June 1, 2023 ATOM Non-Qualified Stock Option (right to buy) Common Stock (10,000) $3.90 Feb. 27, 2029 10,000 Disposed
March 1, 2023 ATOM Employee Stock Option (right to buy) Common Stock (10,000) $3.90 Feb. 27, 2029 10,000 Disposed
Feb. 23, 2023 ATOM Incentive Stock Option (right to buy) Common Stock (14,689) $6.56 Feb. 23, 2033 14,689 Acquired
Feb. 23, 2023 ATOM Non-Qualified Stock Option (right to buy) Common Stock (38,783) $6.56 Feb. 23, 2033 38,783 Acquired
Dec. 1, 2022 ATOM Employee Stock Option (right to buy) Common Stock (10,000) $3.90 Feb. 27, 2029 10,000 Disposed
Sept. 1, 2022 ATOM Employee Stock Option (right to buy) Common Stock (10,000) $3.90 Feb. 27, 2029 10,000 Disposed
March 1, 2022 ATOM Employee Stock Option (right to buy) Common Stock (10,000) $7.01 March 20, 2027 10,000 Disposed
Feb. 23, 2022 ATOM Incentive Stock Option (right to buy) Common Stock (7,300) $14.54 Feb. 23, 2032 7,300 Acquired
Feb. 23, 2022 ATOM Non-Qualified Stock Option (right to buy) Common Stock (20,844) $14.54 Feb. 23, 2032 20,844 Acquired
Dec. 1, 2021 ATOM Stock Option (right to buy) Common Stock (10,000) $3.90 Feb. 27, 2029 10,000 Disposed
Sept. 1, 2021 ATOM Stock Options (Right to Buy) Common Stock (10,000) $7.01 March 20, 2027 10,000 Disposed
March 4, 2021 ATOM Stock Options (Right to Buy) Common Stock (13,904) $22.38 March 4, 2031 13,904 Acquired
March 2, 2021 ATOM Stock Options (Right to Buy) Common Stock (10,000) $6.60 Feb. 27, 2025 10,000 Disposed
March 1, 2021 ATOM Stock Options (Right to Buy) Common Stock (524) $5.70 Jan. 19, 2026 524 Disposed
March 1, 2021 ATOM Stock Options (Right to Buy) Common Stock (9,551) $6.60 Feb. 27, 2025 9,551 Disposed
March 1, 2021 ATOM Stock Options (Right to Buy) Common Stock (7) $7.65 Oct. 12, 2026 6,885 Disposed
March 11, 2020 ATOM Stock Options (Right to Buy) Common Stock (109,872) $4.06 March 11, 2030 109,872 Acquired
Feb. 27, 2019 ATOM Employee Stock Option (Right to Buy) Common Stock (76,923) $3.90 Feb. 27, 2029 76,923 Acquired
March 2, 2018 ATOM Employee Stock Option (Right to Buy) Common Stock (48,656) $5.64 March 2, 2028 48,656 Acquired
March 20, 2017 ATOM Employee Stock Option (Right to Buy) Common Stock (120,843) $7.01 March 20, 2027 120,843 Acquired
Oct. 12, 2016 ATOM Employee Stock Option (Right to Buy) Common Stock (25,000) $7.65 Oct. 12, 2026 25,000 Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 4 holdings

07

Securities held when first becoming an insider, per SEC Form 3.

DateTickerSecuritySharesOwnership
Aug. 4, 2016 ATOM Common Stock 26,060 Direct
Aug. 4, 2016 ATOM Common Stock 2,666 Indirect
Aug. 4, 2016 ATOM Employee Stock Option (Right to Buy)→ Common Stock (19,551) 19,551 Direct
Aug. 4, 2016 ATOM Employee Stock Option (Right to Buy)→ Common Stock (524) 524 Direct

Compensation (DEF 14A)

08

Matched by name from proxy statements (DEF 14A) — verify against the filing.

ATOM

CTO
Fiscal yearSalaryBonusStock awards Option awardsNon-equity incentivePension changeOtherTotal
2020 $281,667 $62,640 $204 $297 · · · $845,452
2019 $240,000 $76,320 $119,999 $192,392 · · · $628,711
2018 $236,667 $37,950 $137,255 $176,505 · · · $588,376

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.