Anaptysbio (ANAB)
Anaptysbio on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, financials, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as pharmaceutical preparations.
5.4M
Short interest
settlement 2026-10-15
10.6
Days to cover
+2.4 days vs prior
48.0%
Short share of volume
2026-11-02
6,739
Fails to deliver
settlement 2026-10-05
Tue 3 Nov
Next earnings
estimated date
-$249K
Insider flow, 90 days
0 buys, 1 sells
As of 2026-11-02.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 15 October 2026, short interest in ANAB is 5,392,123 shares, down 45,315 shares over the last month. Over the last 48 readings it ranged from 4,106,275 shares (15 April 2026) to 10,766,534 shares (15 April 2025). At the reported average volume of 508K shares a day that is 10.6 days to cover.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 5,392,123 | +3.0% | 507,972 | 10.62 |
| 2026-09-30 | 5,236,151 | -3.7% | 639,524 | 8.19 |
| 2026-09-15 | 5,437,438 | +0.5% | 530,306 | 10.25 |
| 2026-08-31 | 5,412,436 | +1.8% | 347,135 | 15.59 |
| 2026-08-14 | 5,317,981 | -1.6% | 372,089 | 14.29 |
| 2026-07-31 | 5,401,866 | +8.1% | 749,400 | 7.21 |
| 2026-07-15 | 4,999,494 | -2.9% | 853,496 | 5.86 |
| 2026-06-30 | 5,148,302 | +11.2% | 622,514 | 8.27 |
| 2026-06-15 | 4,631,786 | -3.9% | 566,928 | 8.17 |
| 2026-05-29 | 4,821,283 | +0.5% | 489,677 | 9.85 |
| 2026-05-15 | 4,796,235 | +7.5% | 660,958 | 7.26 |
| 2026-04-30 | 4,461,532 | +8.7% | 816,096 | 5.47 |
| 2026-04-15 | 4,106,275 | -14.7% | 515,175 | 7.97 |
| 2026-03-31 | 4,811,520 | +0.4% | 694,335 | 6.93 |
| 2026-03-13 | 4,793,437 | -10.7% | 634,203 | 7.56 |
| 2026-02-27 | 5,366,443 | -4.8% | 298,359 | 17.99 |
| 2026-02-13 | 5,633,784 | -0.6% | 559,392 | 10.07 |
| 2026-01-30 | 5,664,742 | +1.8% | 322,566 | 17.56 |
| 2026-01-15 | 5,566,932 | +8.3% | 644,049 | 8.64 |
| 2025-12-31 | 5,142,551 | -8.9% | 423,212 | 12.15 |
| 2025-12-15 | 5,644,248 | -3.7% | 450,189 | 12.54 |
| 2025-11-28 | 5,863,333 | -1.1% | 663,793 | 8.83 |
| 2025-11-14 | 5,930,320 | -13.4% | 822,231 | 7.21 |
| 2025-10-31 | 6,849,127 | -3.6% | 297,023 | 23.06 |
| 2025-10-15 | 7,105,715 | -0.8% | 462,045 | 15.38 |
| 2025-09-30 | 7,162,596 | -23.9% | 902,894 | 7.93 |
| 2025-09-15 | 9,411,077 | -3.0% | 514,085 | 18.31 |
| 2025-08-29 | 9,697,124 | +1.1% | 377,442 | 25.69 |
| 2025-08-15 | 9,595,647 | +0.3% | 510,101 | 18.81 |
| 2025-07-31 | 9,562,636 | +1.9% | 508,082 | 18.82 |
| 2025-07-15 | 9,380,774 | +0.2% | 514,677 | 18.23 |
| 2025-06-30 | 9,362,857 | +2.3% | 478,797 | 19.55 |
| 2025-06-13 | 9,153,626 | -0.6% | 881,252 | 10.39 |
| 2025-05-30 | 9,208,659 | +4.3% | 625,108 | 14.73 |
| 2025-05-15 | 8,831,692 | -1.5% | 469,773 | 18.80 |
| 2025-04-30 | 8,962,251 | -16.8% | 575,917 | 15.56 |
| 2025-04-15 | 10,766,534 | +0.3% | 889,500 | 12.10 |
| 2025-03-31 | 10,734,726 | +9.5% | 1,060,725 | 10.12 |
| 2025-03-14 | 9,800,708 | +8.5% | 728,755 | 13.45 |
| 2025-02-28 | 9,030,127 | -3.0% | 704,481 | 12.82 |
| 2025-02-14 | 9,308,520 | +54.3% | 2,188,261 | 4.25 |
| 2025-01-31 | 6,034,632 | -8.5% | 693,756 | 8.70 |
| 2025-01-15 | 6,597,026 | -9.9% | 661,045 | 9.98 |
| 2024-12-31 | 7,326,087 | +4.9% | 619,159 | 11.83 |
| 2024-12-13 | 6,985,977 | -1.6% | 954,900 | 7.32 |
| 2024-11-29 | 7,099,413 | +5.7% | 441,626 | 16.08 |
| 2024-11-15 | 6,714,227 | +8.7% | 494,191 | 13.59 |
| 2024-10-31 | 6,175,471 | +3.3% | 611,436 | 10.10 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 2 November 2026, the short share of ANAB volume is 48.0%, up 11.3 points over the last five sessions. Over the last 30 readings it ranged from 28.6% (23 September 2026) to 72.5% (30 September 2026). The latest reading is 2.6 points below the 30-session average of 50.6%, on 91K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-11-02 | 44K | 91K | 48.0% | 0 |
| 2026-10-30 | 43K | 86K | 49.5% | 0 |
| 2026-10-29 | 68K | 125K | 54.0% | 0 |
| 2026-10-28 | 47K | 91K | 51.9% | 0 |
| 2026-10-27 | 48K | 128K | 37.2% | 0 |
| 2026-10-26 | 59K | 160K | 36.6% | 0 |
| 2026-10-23 | 72K | 160K | 45.1% | 0 |
| 2026-10-22 | 53K | 87K | 61.1% | 0 |
| 2026-10-21 | 101K | 219K | 46.2% | 1,415 |
| 2026-10-20 | 175K | 379K | 46.2% | 236 |
| 2026-10-19 | 72K | 168K | 43.0% | 0 |
| 2026-10-16 | 99K | 154K | 64.0% | 0 |
| 2026-10-15 | 83K | 186K | 44.8% | 19,317 |
| 2026-10-14 | 96K | 172K | 56.1% | 2,814 |
| 2026-10-13 | 109K | 156K | 69.8% | 5 |
| 2026-10-12 | 77K | 146K | 53.1% | 0 |
| 2026-10-09 | 80K | 131K | 61.5% | 0 |
| 2026-10-08 | 109K | 183K | 59.9% | 0 |
| 2026-10-07 | 145K | 264K | 54.9% | 3,199 |
| 2026-10-06 | 175K | 263K | 66.4% | 37,622 |
| 2026-10-05 | 89K | 173K | 51.6% | 84 |
| 2026-10-02 | 71K | 173K | 40.8% | 0 |
| 2026-10-01 | 70K | 181K | 38.6% | 3,402 |
| 2026-09-30 | 235K | 324K | 72.5% | 0 |
| 2026-09-29 | 96K | 271K | 35.6% | 4,417 |
| 2026-09-28 | 52K | 121K | 43.2% | 0 |
| 2026-09-25 | 103K | 163K | 63.2% | 525 |
| 2026-09-24 | 76K | 165K | 46.1% | 5,853 |
| 2026-09-23 | 98K | 342K | 28.6% | 0 |
| 2026-09-22 | 176K | 362K | 48.7% | 3,600 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 5 October 2026, the fails-to-deliver balance in ANAB is 6,739 shares, up 5,988 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (26 May 2026) to 25,056 shares (18 June 2026).
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-10-05 | 6,739 | $48.53 | $327K |
| 2026-09-25 | 751 | $51.70 | $39K |
| 2026-09-04 | 9 | $57.46 | $517 |
| 2026-08-28 | 4 | $57.29 | $229 |
| 2026-08-24 | 252 | $57.74 | $15K |
| 2026-08-11 | 4,070 | $55.47 | $226K |
| 2026-08-03 | 117 | $53.36 | $6K |
| 2026-07-24 | 200 | $54.91 | $11K |
| 2026-07-23 | 200 | $52.61 | $11K |
| 2026-07-22 | 200 | $53.76 | $11K |
| 2026-07-20 | 1 | $58.00 | $58 |
| 2026-07-13 | 4 | $66.39 | $266 |
| 2026-07-09 | 509 | $65.35 | $33K |
| 2026-07-02 | 124 | $65.43 | $8K |
| 2026-06-29 | 12,511 | $63.15 | $790K |
| 2026-06-18 | 25,056 | $56.77 | $1.4M |
| 2026-06-15 | 953 | $56.07 | $53K |
| 2026-06-10 | 6,866 | $51.63 | $354K |
| 2026-06-08 | 645 | $50.37 | $32K |
| 2026-05-29 | 9 | $57.02 | $513 |
| 2026-05-27 | 5 | $57.77 | $289 |
| 2026-05-26 | 1 | $59.71 | $60 |
| 2026-05-20 | 585 | $59.77 | $35K |
| 2026-05-05 | 198 | $69.78 | $14K |
| 2026-04-30 | 15 | $62.34 | $935 |
| 2026-04-24 | 15 | $51.27 | $769 |
| 2026-04-20 | 1,113 | $67.51 | $75K |
| 2026-04-02 | 4,027 | $56.73 | $228K |
| 2026-04-01 | 21,487 | $55.46 | $1.2M |
| 2026-03-17 | 3 | $64.78 | $194 |
Insider trades
SEC Form 4, newest first. JSONInsiders at ANAB reported 1 open-market sell worth $249K in the last 90 days and no open-market buys. Latest filing: RENTON HOLLINGS (Director) on 2026-10-01.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-10-01 | RENTON HOLLINGS | Director | Sell | 5K | $49.87 | $249K | 11K |
| 2026-10-01 | RENTON HOLLINGS | Director | Exercise or conversion | 5K | $18.03 | $90K | 16K |
| 2026-09-15 | Orwin John A | Director | Exercise or conversion | 1K | $0.00 | $0 | 18K |
| 2026-06-15 | Schmid John P. | Director | Exercise or conversion | 6K | $0.00 | $0 | 38K |
| 2026-06-15 | Orwin John A | Director | Exercise or conversion | 6K | $0.00 | $0 | 17K |
| 2026-06-15 | RENTON HOLLINGS | Director | Exercise or conversion | 6K | $0.00 | $0 | 11K |
| 2026-03-30 | Schmid John P. | Director | Sell | 522 | $57.40 | $30K | 32K |
| 2026-03-30 | Schmid John P. | Director | Sell | 8K | $56.70 | $427K | 32K |
| 2026-03-30 | Schmid John P. | Director | Sell | 13K | $55.71 | $702K | 40K |
| 2026-03-27 | Faga Daniel | President, CEO | Sell | 3K | $57.91 | $149K | 511K |
| 2026-03-27 | Faga Daniel | President, CEO | Sell | 510 | $56.61 | $29K | 513K |
| 2026-03-27 | Faga Daniel | President, CEO | Sell | 4K | $58.62 | $215K | 507K |
| 2026-03-27 | Faga Daniel | President, CEO | Sell | 490 | $59.62 | $29K | 506K |
| 2026-03-27 | Faga Daniel | President, CEO | Sell | 550 | $60.63 | $33K | 506K |
| 2026-03-27 | Faga Daniel | President, CEO | Sell | 1K | $62.15 | $63K | 505K |
| 2026-03-27 | Faga Daniel | President, CEO | Sell | 3K | $63.35 | $164K | 502K |
| 2026-03-27 | Faga Daniel | President, CEO | Sell | 3K | $64.19 | $203K | 499K |
| 2026-03-27 | Faga Daniel | President, CEO | Sell | 3K | $65.20 | $198K | 496K |
| 2026-03-27 | Faga Daniel | President, CEO | Sell | 100 | $65.99 | $7K | 496K |
| 2026-03-25 | Faga Daniel | President, CEO | Grant | 34K | price not stated in the filing | not stated | 514K |
| 2026-02-11 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Sell | 10K | $54.00 | $540K | 13K |
| 2026-02-11 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Exercise or conversion | 10K | $29.70 | $297K | 23K |
| 2026-01-15 | Marquet Magda | Director | Sell | 2K | $48.85 | $84K | 10K |
| 2026-01-15 | Marquet Magda | Director | Sell | 9K | $48.12 | $447K | 12K |
| 2026-01-15 | Marquet Magda | Director | Exercise or conversion | 11K | $26.11 | $287K | 21K |
| 2026-01-08 | Faga Daniel | President, CEO | Sell | 14K | $44.71 | $639K | 479K |
| 2026-01-08 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Sell | 2K | $44.71 | $99K | 13K |
| 2026-01-08 | MULROY DENNIS | CHIEF FINANCIAL OFFICER | Sell | 3K | $44.71 | $112K | 22K |
| 2026-01-08 | Lizzul Paul F. | Chief Medical Officer | Sell | 4K | $44.71 | $163K | 42K |
| 2026-01-07 | MULROY DENNIS | CHIEF FINANCIAL OFFICER | Sell | 2K | $45.11 | $86K | 18K |
| 2026-01-07 | Faga Daniel | President, CEO | Sell | 9K | $45.11 | $415K | 467K |
| 2026-01-07 | Lizzul Paul F. | Chief Medical Officer | Sell | 2K | $45.11 | $101K | 37K |
| 2026-01-07 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Sell | 2K | $46.13 | $85K | 10K |
| 2026-01-07 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Sell | 500 | $47.23 | $24K | 9K |
| 2026-01-07 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Sell | 5K | $45.38 | $240K | 11K |
| 2026-01-07 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Sell | 2K | $45.11 | $91K | 17K |
| 2026-01-07 | Faga Daniel | President, CEO | Exercise or conversion | 27K | price not stated in the filing | not stated | 494K |
| 2026-01-07 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Exercise or conversion | 6K | price not stated in the filing | not stated | 15K |
| 2026-01-07 | MULROY DENNIS | CHIEF FINANCIAL OFFICER | Exercise or conversion | 7K | price not stated in the filing | not stated | 24K |
| 2026-01-07 | Lizzul Paul F. | Chief Medical Officer | Exercise or conversion | 9K | price not stated in the filing | not stated | 46K |
| 2026-01-06 | MULROY DENNIS | CHIEF FINANCIAL OFFICER | Exercise or conversion | 5K | price not stated in the filing | not stated | 20K |
| 2026-01-06 | Faga Daniel | President, CEO | Exercise or conversion | 18K | price not stated in the filing | not stated | 476K |
| 2026-01-06 | Lizzul Paul F. | Chief Medical Officer | Exercise or conversion | 6K | price not stated in the filing | not stated | 39K |
| 2026-01-06 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Exercise or conversion | 6K | price not stated in the filing | not stated | 19K |
| 2026-01-05 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Sell | 3K | $43.26 | $129K | 13K |
| 2026-01-05 | Lizzul Paul F. | Chief Medical Officer | Sell | 4K | $43.26 | $183K | 33K |
| 2026-01-05 | MULROY DENNIS | CHIEF FINANCIAL OFFICER | Sell | 3K | $43.26 | $145K | 14K |
| 2026-01-05 | Faga Daniel | President, CEO | Sell | 15K | $43.26 | $662K | 458K |
| 2026-01-03 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Exercise or conversion | 7K | price not stated in the filing | not stated | 16K |
| 2026-01-03 | Lizzul Paul F. | Chief Medical Officer | Exercise or conversion | 11K | price not stated in the filing | not stated | 38K |
| 2026-01-03 | MULROY DENNIS | CHIEF FINANCIAL OFFICER | Exercise or conversion | 8K | price not stated in the filing | not stated | 18K |
| 2026-01-03 | Faga Daniel | President, CEO | Exercise or conversion | 35K | price not stated in the filing | not stated | 473K |
| 2025-12-23 | Ware J. Anthony | Director | Sell | 4K | $49.58 | $193K | 10K |
| 2025-12-23 | Schmid John P. | Director | Other transaction | 11K | $51.00 | $564K | 0 |
| 2025-12-22 | Lizzul Paul F. | Chief Medical Officer | Sell | 2K | $50.00 | $75K | 27K |
| 2025-12-22 | Lizzul Paul F. | Chief Medical Officer | Exercise or conversion | 2K | $18.50 | $28K | 28K |
| 2025-12-22 | MULROY DENNIS | CHIEF FINANCIAL OFFICER | Sell | 10K | $50.00 | $500K | 9K |
| 2025-12-22 | MULROY DENNIS | CHIEF FINANCIAL OFFICER | Exercise or conversion | 10K | $20.16 | $202K | 19K |
| 2025-12-22 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Sell | 10K | $51.00 | $510K | 9K |
| 2025-12-22 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Exercise or conversion | 10K | $14.02 | $140K | 19K |
| 2025-12-18 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Sell | 141 | $46.99 | $7K | 9K |
| 2025-12-17 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Sell | 10K | $46.00 | $460K | 9K |
| 2025-12-17 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Exercise or conversion | 10K | $14.02 | $140K | 19K |
| 2025-12-16 | MULROY DENNIS | CHIEF FINANCIAL OFFICER | Sell | 6K | $45.21 | $288K | 9K |
| 2025-12-16 | MULROY DENNIS | CHIEF FINANCIAL OFFICER | Sell | 9K | $44.62 | $418K | 16K |
| 2025-12-16 | MULROY DENNIS | CHIEF FINANCIAL OFFICER | Exercise or conversion | 10K | $20.16 | $202K | 25K |
| 2025-12-16 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Sell | 4K | $45.24 | $190K | 9K |
| 2025-12-16 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Sell | 8K | $44.68 | $371K | 13K |
| 2025-12-16 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Exercise or conversion | 8K | $20.16 | $151K | 22K |
| 2025-12-16 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Exercise or conversion | 5K | $14.02 | $70K | 14K |
| 2025-09-30 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Sell | 8K | $29.00 | $239K | 9K |
| 2025-09-30 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Exercise or conversion | 5K | $14.02 | $70K | 17K |
| 2025-09-15 | Orwin John A | Director | Exercise or conversion | 1K | $0.00 | $0 | 11K |
| 2025-08-08 | RENTON HOLLINGS | Director | Sell | 7K | $19.70 | $140K | 5K |
| 2025-08-08 | RENTON HOLLINGS | Director | Sell | 3K | $19.44 | $60K | 12K |
| 2025-08-08 | RENTON HOLLINGS | Director | Exercise or conversion | 10K | $6.93 | $71K | 15K |
| 2025-07-02 | RENTON HOLLINGS | Director | Sell | 14K | $23.82 | $326K | 5K |
| 2025-07-02 | RENTON HOLLINGS | Director | Sell | 7K | $23.09 | $167K | 19K |
| 2025-07-02 | RENTON HOLLINGS | Director | Exercise or conversion | 21K | $6.93 | $145K | 26K |
| 2025-06-18 | FENTON DENNIS M | Director | Sell | 3K | $23.97 | $72K | 5K |
| 2025-06-18 | RENTON HOLLINGS | Director | Sell | 3K | $23.97 | $72K | 5K |
| 2025-06-15 | Jain Rita | Director | Exercise or conversion | 7K | $0.00 | $0 | 12K |
| 2025-06-15 | FENTON DENNIS M | Director | Exercise or conversion | 6K | $0.00 | $0 | 8K |
| 2025-06-15 | Marquet Magda | Director | Exercise or conversion | 6K | $0.00 | $0 | 10K |
| 2025-06-15 | Orwin John A | Director | Exercise or conversion | 6K | $0.00 | $0 | 9K |
| 2025-06-15 | RENTON HOLLINGS | Director | Exercise or conversion | 6K | $0.00 | $0 | 8K |
| 2025-06-15 | Schmid John P. | Director | Exercise or conversion | 6K | $0.00 | $0 | 52K |
| 2025-06-15 | Ware J. Anthony | Director | Exercise or conversion | 6K | $0.00 | $0 | 14K |
| 2025-03-25 | Schmid John P. | Director | Other transaction | 11K | $18.18 | $201K | 11K |
| 2025-01-13 | Schmid John P. | Director | Exercise or conversion | 22K | $4.55 | $99K | 26K |
| 2025-01-13 | Schmid John P. | Director | Exercise or conversion | 21K | $8.54 | $176K | 46K |
| 2025-01-06 | Faga Daniel | President, CEO | Exercise or conversion | 18K | price not stated in the filing | not stated | 443K |
| 2025-01-06 | Faga Daniel | President, CEO | Tax withholding | 6K | $15.30 | $98K | 436K |
| 2025-01-06 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Exercise or conversion | 6K | price not stated in the filing | not stated | 13K |
| 2025-01-06 | LOUMEAU ERIC J | CHIEF LEGAL OFFICER | Tax withholding | 2K | $15.30 | $34K | 11K |
| 2025-01-06 | MULROY DENNIS | CHIEF FINANCIAL OFFICER | Tax withholding | 2K | $15.30 | $31K | 14K |
| 2025-01-06 | MULROY DENNIS | CHIEF FINANCIAL OFFICER | Exercise or conversion | 5K | price not stated in the filing | not stated | 16K |
| 2025-01-06 | Lizzul Paul F. | Chief Medical Officer | Exercise or conversion | 6K | price not stated in the filing | not stated | 28K |
| 2025-01-06 | Lizzul Paul F. | Chief Medical Officer | Tax withholding | 2K | $15.30 | $35K | 26K |
| 2025-01-03 | Faga Daniel | President, CEO | Exercise or conversion | 35K | price not stated in the filing | not stated | 438K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Planned sales (Form 144)
Newest first. JSON50 Form 144 notices on file for ANAB worth $28.5M at the prices reported; 1 in the last 90 days worth $249K. Latest: HOLLINGS C RENTON filed on 2026-10-01 to sell 5,000 shares ($249K) from 2026-10-01.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-10-01 | HOLLINGS C RENTONDirector | 5K | $249K | 0.017% | 2026-10-01 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-07-13 | JOE ANTHONY WAREDirector | 11K | $718K | 0.037% | 2026-07-13 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-06-30 | JOE ANTHONY WAREDirector | 6K | $409K | 0.021% | 2026-06-30 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-06-29 | DENNIS MULROYOfficer | 9K | $601K | 0.033% | 2026-06-29 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-06-26 | DENNIS MULROYOfficer | 10K | $608K | 0.034% | 2026-06-26 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-06-17 | DENNIS MULROYOfficer | 850 | $51K | 0.003% | 2026-06-17 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-06-16 | DENNIS MULROYOfficer | 1K | $76K | 0.004% | 2026-06-16 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-06-15 | DENNIS MULROYOfficer | 20K | $1.2M | 0.069% | 2026-06-15 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-06-12 | DENNIS MULROYOfficer | 20K | $1.1M | 0.069% | 2026-06-12 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-06-11 | DENNIS MULROYOfficer | 35K | $1.8M | 0.120% | 2026-06-11 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-06-10 | DENNIS MULROYOfficer | 20K | $1.0M | 0.069% | 2026-06-10 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-06-09 | DENNIS MULROYOfficer | 20K | $1.0M | 0.069% | 2026-06-09 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-06-08 | DENNIS MULROYOfficer | 22K | $1.1M | 0.076% | 2026-06-08 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-06-05 | DENNIS MULROYOfficer | 22K | $1.2M | 0.077% | 2026-06-05 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-06-05 | DENNIS MULROYOfficer | 20K | $1.0M | 0.069% | 2026-06-04 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-06-03 | DENNIS MULROYOfficer | 20K | $1.0M | 0.069% | 2026-06-03 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-06-02 | DENNIS MULROYOfficer | 20K | $1.0M | 0.069% | 2026-06-02 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-06-01 | DENNIS MULROYOfficer | 8K | $404K | 0.026% | 2026-06-01 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-29 | DENNIS MULROYOfficer | 15K | $835K | 0.052% | 2026-05-29 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-28 | DENNIS MULROYOfficer | 10K | $595K | 0.035% | 2026-05-28 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-27 | DENNIS MULROYOfficer | 10K | $585K | 0.034% | 2026-05-27 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-26 | DENNIS MULROYOfficer | 10K | $576K | 0.034% | 2026-05-26 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-22 | DENNIS MULROYOfficer | 10K | $593K | 0.034% | 2026-05-22 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-21 | DENNIS MULROYOfficer | 15K | $928K | 0.053% | 2026-05-21 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-19 | DENNIS MULROYOfficer | 10K | $599K | 0.034% | 2026-05-19 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-15 | DENNIS MULROYOfficer | 10K | $633K | 0.034% | 2026-05-15 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-03-30 | JOHN SCHMIDDirector | 21K | $1.2M | 0.072% | 2026-03-30 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-11 | ERIC J LOUMEAUOfficer | 10K | $540K | 0.036% | 2026-02-11 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-01-15 | MAGDA MARQUETDirector | 11K | $531K | 0.040% | 2026-01-15 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-01-09 | Paul F. LizzulOfficer | 4K | $165K | 0.013% | 2026-01-08 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-01-09 | Daniel FagaOfficer | 14K | $646K | 0.052% | 2026-01-08 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-01-09 | DENNIS MULROYOfficer | 3K | $114K | 0.009% | 2026-01-08 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-01-09 | ERIC J LOUMEAUOfficer | 2K | $100K | 0.008% | 2026-01-08 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-01-08 | Paul F. LizzulOfficer | 2K | $98K | 0.008% | 2026-01-07 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-01-08 | Daniel FagaOfficer | 9K | $404K | 0.033% | 2026-01-07 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-01-08 | DENNIS MULROYOfficer | 2K | $84K | 0.007% | 2026-01-07 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-01-08 | ERIC J LOUMEAUOfficer | 2K | $89K | 0.007% | 2026-01-07 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-01-07 | ERIC J LOUMEAUOfficer | 8K | $348K | 0.028% | 2026-01-07 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-01-06 | Paul F. LizzulOfficer | 4K | $190K | 0.015% | 2026-01-05 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-01-06 | Daniel FagaOfficer | 15K | $688K | 0.055% | 2026-01-05 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-01-06 | DENNIS MULROYOfficer | 3K | $151K | 0.012% | 2026-01-05 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-01-06 | ERIC J LOUMEAUOfficer | 3K | $134K | 0.011% | 2026-01-05 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-23 | JOE ANTHONY WAREDirector | 4K | $193K | 0.014% | 2025-12-23 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-22 | ERIC J LOUMEAUOfficer | 10K | $510K | 0.036% | 2025-12-22 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-22 | PAUL F LIZZULOfficer | 2K | $75K | 0.005% | 2025-12-22 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-22 | DENNIS MULROYOfficer | 10K | $500K | 0.036% | 2025-12-22 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-18 | ERIC J LOUMEAUOfficer | 141 | $7K | 0.001% | 2025-12-18 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-17 | ERIC J LOUMEAUOfficer | 10K | $460K | 0.036% | 2025-12-17 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-16 | DENNIS MULROYOfficer | 16K | $705K | 0.057% | 2025-12-16 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-16 | ERIC J LOUMEAUOfficer | 13K | $561K | 0.045% | 2025-12-16 | Morgan Stanley Smith Barney LLC Executive Financial Services |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON2 holders report 5% or more of ANAB in their latest filing, all on Schedule 13G (passive). The largest reported stake is Sirenia Capital Management LP at 5.0% of the class (1,491,959 shares), filed 2026-08-14 for an event on 2026-06-30.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-08-14 | 13G/Ano. 1 | Sirenia Capital Management LPinvestment adviser, partnership | 1.5M | 5.0% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 1 | Alex Silversteinparent holding company, individual | 1.5M | 5.0% | 2026-06-30 |
| 2026-05-15 | 13G/Ano. 2 | Point72 Asset Management, L.P.partnership | 55K | 0.2% | 2026-03-31 |
| 2026-05-15 | 13G/Ano. 2 | Point72 Capital Advisors, Inc.corporation | 55K | 0.2% | 2026-03-31 |
| 2026-05-15 | 13G/Ano. 2 | Steven A. Cohenindividual | 55K | 0.2% | 2026-03-31 |
| 2026-03-26 | 13G/Ano. 1 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
| 2026-02-11 | 13G/Ano. 1 | Morgan Stanleyparent holding company, corporation | 1.0M | 3.6% | 2025-12-31 |
| 2026-02-11 | 13G/Ano. 1 | Morgan Stanley Capital Services LLCbroker-dealer, corporation | 879K | 3.2% | 2025-12-31 |
| 2026-01-16 | 13G/Ano. 1 | Millennium Management LLCother entity | 814K | 2.9% | 2025-12-31 |
| 2026-01-16 | 13G/Ano. 1 | Millennium Group Management LLCother entity | 814K | 2.9% | 2025-12-31 |
| 2026-01-16 | 13G/Ano. 1 | Israel A. Englanderindividual | 814K | 2.9% | 2025-12-31 |
| 2025-11-14 | 13G/Ano. 2 | Mathew P. Arensindividual | 865K | 3.1% | 2025-09-30 |
| 2025-11-14 | 13G/Ano. 2 | First Light Asset Management, LLCinvestment adviser | 771K | 2.8% | 2025-09-30 |
| 2025-11-12 | 13G/Ano. 1 | GOLDMAN SACHS & CO. LLCbroker-dealer, other entity, investment adviser | 1.3M | 4.5% | 2025-09-30 |
| 2025-11-12 | 13G/Ano. 1 | THE GOLDMAN SACHS GROUP, INC.parent holding company, corporation | 1.3M | 4.5% | 2025-09-30 |
13F holders
Tracked managers holding ANAB at their latest 13F. JSON6 of the 30 tracked managers held ANAB at their latest 13F, $142.4M in total at quarter-end prices. Millennium Management is the largest at $54.5M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 3 added shares and 3 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Millennium Management | 2026-06-30 | 807K | $54.5M | 0.02% | +332K |
| D. E. Shaw & Co. | 2026-06-30 | 540K | $36.4M | 0.02% | -40K |
| Citadel Advisors | 2026-06-30 | 394K | $26.6M | 0.00% | +161K |
| Two Sigma Investments | 2026-06-30 | 263K | $17.8M | 0.01% | -202K |
| Renaissance Technologies | 2026-06-30 | 58K | $3.9M | 0.01% | -33K |
| AQR Capital Management | 2026-06-30 | 46K | $3.1M | 0.00% | +14K |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
Financials
SEC XBRL, as filed. JSONIn Q1 FY 2027 (quarter ended 2026-03-31) Anaptysbio reported revenue of $25.6M, down 8.0% from the same quarter a year earlier, and net loss of $52.9M (-1.84 diluted EPS). In FY 2026 it generated $19.7M of operating cash flow and spent $68.6M on buybacks.
- Cash
- $133.8M
- Equity
- $10.6M
- Total assets
- $317.0M
- Shares outstanding
- 29,895,244
Quarterly, last 8 quarters
| Quarter | Period end | Revenue | Net income | Margin | Diluted EPS |
|---|---|---|---|---|---|
| Q1 FY 2027 | 2026-03-31 | $25.6M | -$52.9M | -206.9% | -1.84 |
| Q4 FY 2026derived | 2025-12-31 | $108.2M | $49.6M | 45.8% | n/a |
| Q3 FY 2026 | 2025-09-30 | $76.3M | $15.1M | 19.8% | 0.52 |
| Q2 FY 2026 | 2025-06-30 | $22.3M | -$38.6M | -173.5% | -1.34 |
| Q1 FY 2026 | 2025-03-31 | $27.8M | -$39.3M | -141.6% | -1.28 |
| Q4 FY 2025derived | 2024-12-31 | $43.1M | -$21.8M | -50.5% | n/a |
| Q3 FY 2025 | 2024-09-30 | $30.0M | -$32.9M | -109.4% | -1.14 |
| Q2 FY 2025 | 2024-06-30 | $11.0M | -$46.7M | -425.3% | -1.71 |
Fiscal years, with buybacks and dividends
| Fiscal year | Ends | Revenue | Net income | Operating cash flow | Capex | Buybacks | Dividends |
|---|---|---|---|---|---|---|---|
| FY 2026 | 2025-12-31 | $234.6M | -$13.2M | $19.7M | $87K | $68.6M | n/a |
| FY 2025 | 2024-12-31 | $91.3M | -$145.2M | -$135.3M | $358K | $456K | n/a |
| FY 2024 | 2023-12-31 | $17.2M | -$163.6M | -$120.8M | $807K | $50.0M | n/a |
| FY 2023 | 2022-12-31 | $10.3M | -$128.7M | -$73.6M | $358K | $0 | n/a |
| FY 2022 | 2021-12-31 | $63.2M | -$57.8M | -$45.9M | $1.4M | $0 | n/a |
Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are the cash the company paid to repurchase its common stock in the year, not the amount authorized. Balance sheet lines are as of 2026-06-30; shares outstanding as of 2026-09-16 from the cover page.
What this page is
Anaptysbio in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows Anaptysbio (ANAB), SEC CIK 1370053, listed on Nasdaq, classified by the SEC as pharmaceutical preparations. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-11-02.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-10-05.JSON and CSV
- Planned sales
- SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-10-01.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-08-14.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Financials
- SEC EDGAR 10-K and 10-Q filingsSource: SEC.Weekly; values are as filed in the 10-Q and 10-K. Latest 2026-03-31.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-05-12.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-10-01.JSON and CSV
- Company record
- EDGAR filing index for CIK 1370053Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
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Datasets
Frequently Asked Questions
How much of ANAB is sold short?
5,392,123 shares were held short at the 2026-10-15 settlement, 10.6 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is ANAB's daily short volume?
On 2026-11-02, 43,864 of the 91,451 ANAB shares reported to FINRA were sold short, 48.0% of the day's reported volume. Short volume is a flow for one day, not a position.
Does ANAB have fails to deliver?
The SEC's latest file shows 6,739 ANAB shares failed to deliver at settlement 2026-10-05. Fails are reported per settlement date and published twice a month with a lag.
Are ANAB insiders buying or selling?
Insiders at ANAB reported 1 open-market sell worth $249K in the last 90 days and no open-market buys. Latest filing: RENTON HOLLINGS (Director) on 2026-10-01.
Have ANAB insiders filed to sell?
50 Form 144 notices on file for ANAB worth $28.5M at the prices reported; 1 in the last 90 days worth $249K. Latest: HOLLINGS C RENTON filed on 2026-10-01 to sell 5,000 shares ($249K) from 2026-10-01.
Who owns 5% or more of ANAB?
2 holders report 5% or more of ANAB in their latest filing, all on Schedule 13G (passive). The largest reported stake is Sirenia Capital Management LP at 5.0% of the class (1,491,959 shares), filed 2026-08-14 for an event on 2026-06-30.
What did ANAB report last quarter?
In Q1 FY 2027 (quarter ended 2026-03-31) Anaptysbio reported revenue of $25.6M, down 8.0% from the same quarter a year earlier, and net loss of $52.9M (-1.84 diluted EPS). In FY 2026 it generated $19.7M of operating cash flow and spent $68.6M on buybacks.
Which tracked 13F managers own ANAB?
6 of the 30 tracked 13F managers held ANAB shares at their latest filing, $142.4M in all. The largest: Izzy Englander's Millennium Management (807K shares, $54.5M), D. E. Shaw & Co. (540K shares, $36.4M), Ken Griffin's Citadel Advisors (394K shares, $26.6M), Two Sigma Investments (263K shares, $17.8M), Renaissance Technologies (58K shares, $3.9M), Cliff Asness's AQR Capital Management (46K shares, $3.1M).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.