Biomea Fusion (BMEA)

Biomea Fusion on one page: short interest, daily short volume, fails to deliver, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as pharmaceutical preparations.

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15.7M

Short interest

settlement 2026-10-15

4.8

Days to cover

-0.8 days vs prior

49.0%

Short share of volume

2026-11-02

79,475

Fails to deliver

settlement 2026-10-13

Tue 3 Nov

Next earnings

estimated date

Insider flow, 90 days

0 buys, 0 sells

As of 2026-11-02.

Short interest

FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSON

As of 15 October 2026, short interest in BMEA is 15,713,730 shares, up 2,493,250 shares over the last month. Over the last 48 readings it ranged from 7,751,080 shares (30 September 2025) to 15,713,730 shares (15 October 2026). The latest reading sits at the top of that range. At the reported average volume of 3.2M shares a day that is 4.8 days to cover.

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Settlement	Shares short	Change	Avg daily volume	Days to cover
2026-10-15	15,713,730	+11.6%	3,243,802	4.84
2026-09-30	14,077,283	+6.5%	2,490,242	5.65
2026-09-15	13,220,480	+10.6%	2,052,823	6.44
2026-08-31	11,949,049	+21.7%	2,409,521	4.96
2026-08-14	9,820,656	-2.0%	470,419	20.88
2026-07-31	10,016,624	-4.1%	438,675	22.83
2026-07-15	10,448,652	-24.4%	1,055,082	9.90
2026-06-30	13,830,845	-0.9%	947,630	14.60
2026-06-15	13,961,282	-3.6%	1,114,504	12.53
2026-05-29	14,480,424	+0.6%	1,002,198	14.45
2026-05-15	14,401,625	+0.3%	1,363,348	10.56
2026-04-30	14,358,300	+1.9%	1,805,755	7.95
2026-04-15	14,093,187	+10.3%	2,097,815	6.72
2026-03-31	12,774,281	+5.1%	1,692,712	7.55
2026-03-13	12,154,134	+7.3%	872,399	13.93
2026-02-27	11,326,632	+0.1%	769,058	14.73
2026-02-13	11,309,199	+11.3%	1,104,867	10.24
2026-01-30	10,162,984	+6.0%	1,099,717	9.24
2026-01-15	9,585,816	+1.3%	1,476,644	6.49
2025-12-31	9,467,127	+1.0%	886,724	10.68
2025-12-15	9,374,785	+11.1%	2,028,814	4.62
2025-11-28	8,436,211	+2.1%	1,367,886	6.17
2025-11-14	8,263,289	-2.4%	981,640	8.42
2025-10-31	8,468,368	-2.1%	1,922,997	4.40
2025-10-15	8,652,825	+11.6%	5,034,896	1.72
2025-09-30	7,751,080	-0.9%	779,280	9.95
2025-09-15	7,821,133	-2.8%	557,681	14.02
2025-08-29	8,046,935	-3.6%	565,447	14.23
2025-08-15	8,346,203	+0.6%	751,978	11.10
2025-07-31	8,296,397	-0.4%	729,574	11.37
2025-07-15	8,331,450	-2.8%	1,417,683	5.88
2025-06-30	8,567,781	-28.4%	3,040,286	2.82
2025-06-13	11,962,022	+15.4%	8,209,032	1.46
2025-05-30	10,363,409	+0.9%	637,625	16.25
2025-05-15	10,274,132	+3.1%	734,472	13.99
2025-04-30	9,965,665	+3.5%	698,252	14.27
2025-04-15	9,631,270	-8.0%	829,037	11.62
2025-03-31	10,465,611	+0.8%	669,874	15.62
2025-03-14	10,379,166	-6.5%	698,904	14.85
2025-02-28	11,096,609	+0.7%	497,804	22.29
2025-02-14	11,018,925	+2.7%	507,875	21.70
2025-01-31	10,726,079	-12.7%	506,165	21.19
2025-01-15	12,280,459	+6.4%	954,172	12.87
2024-12-31	11,543,326	+6.2%	1,458,882	7.91
2024-12-13	10,872,619	+9.6%	680,406	15.98
2024-11-29	9,916,793	+5.4%	526,301	18.84
2024-11-15	9,407,449	+11.0%	796,765	11.81
2024-10-31	8,476,877	+3.5%	774,185	10.95

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 2 November 2026, the short share of BMEA volume is 49.0%, down 6.3 points over the last five sessions. Over the last 30 readings it ranged from 36.7% (28 October 2026) to 80.5% (28 September 2026). The latest reading is 6.5 points below the 30-session average of 55.5%, on 434K shares reported.

Date	Short volume	Total volume	Short share	Exempt
2026-11-02	213K	434K	49.0%	0
2026-10-30	279K	664K	42.0%	11,850
2026-10-29	156K	369K	42.4%	0
2026-10-28	140K	382K	36.7%	0
2026-10-27	252K	667K	37.8%	37,820
2026-10-26	495K	894K	55.4%	0
2026-10-23	323K	587K	55.0%	10,526
2026-10-22	675K	1.2M	57.8%	86,239
2026-10-21	1.2M	2.0M	59.0%	150,819
2026-10-20	1.6M	2.3M	70.7%	16,344
2026-10-19	323K	779K	41.4%	0
2026-10-16	1.3M	2.3M	54.6%	99,505
2026-10-15	802K	1.7M	48.1%	106,292
2026-10-14	4.6M	6.8M	68.2%	556,133
2026-10-13	1.6M	2.7M	59.9%	15,557
2026-10-12	205K	367K	55.8%	2
2026-10-09	341K	728K	46.8%	0
2026-10-08	419K	767K	54.7%	738
2026-10-07	201K	409K	49.1%	1,810
2026-10-06	222K	351K	63.4%	0
2026-10-05	363K	596K	60.9%	0
2026-10-02	326K	511K	63.7%	0
2026-10-01	277K	487K	56.9%	2,544
2026-09-30	349K	702K	49.8%	0
2026-09-29	521K	779K	66.9%	1,030
2026-09-28	701K	871K	80.5%	38,174
2026-09-25	1.2M	1.8M	66.7%	18,365
2026-09-24	599K	1.3M	45.8%	70,068
2026-09-23	3.0M	4.5M	66.8%	319,934
2026-09-22	373K	616K	60.6%	0

Fails to deliver

SEC, the last 30 settlement dates with a fail. JSON

As of 13 October 2026, the fails-to-deliver balance in BMEA is 79,475 shares, up 67,917 shares over the last settlement date. Over the last 30 readings it ranged from 5 shares (17 September 2026) to 459,121 shares (24 September 2026).

Settlement	Shares failed	Price	Value
2026-10-13	79,475	$1.36	$108K
2026-10-09	11,558	$1.37	$16K
2026-10-05	62,417	$1.27	$79K
2026-10-02	513	$1.30	$667
2026-10-01	335	$1.33	$446
2026-09-30	267	$1.26	$336
2026-09-28	23,682	$1.32	$31K
2026-09-25	22,143	$1.49	$33K
2026-09-24	459,121	$1.44	$661K
2026-09-23	20,154	$1.70	$34K
2026-09-22	322	$1.71	$551
2026-09-21	3,705	$1.83	$7K
2026-09-18	11,947	$1.79	$21K
2026-09-17	5	$1.74	$9
2026-09-14	38	$1.74	$66
2026-09-11	2,256	$1.70	$4K
2026-09-10	1,261	$1.85	$2K
2026-09-09	8,343	$1.93	$16K
2026-09-08	72,517	$2.03	$147K
2026-09-04	28,824	$1.91	$55K
2026-09-03	6,493	$1.94	$13K
2026-09-02	100,315	$1.80	$181K
2026-09-01	37	$1.68	$62
2026-08-31	387	$1.73	$670
2026-08-28	502	$1.68	$843
2026-08-27	6,731	$1.71	$12K
2026-08-26	13,994	$1.73	$24K
2026-08-21	829	$1.36	$1K
2026-08-17	1,202	$1.32	$2K
2026-08-06	7,416	$1.26	$9K

Insider trades

SEC Form 4, newest first. JSON

No open-market insider trades were reported for BMEA in the last 90 days. The most recent filings are listed below. Latest filing: Erdtmann Rainer M (See Remarks) on 2025-12-11.

Date	Insider	Title	Type	Shares	Price	Value	Owned after
2025-12-11	Erdtmann Rainer M	See Remarks	Buy	30K	$1.43	$43K	723K
2025-12-02	Hitchcock Michael J.M.	Interim CEO	Buy	100K	$0.99	$99K	115K
2025-12-01	Erdtmann Rainer M	See Remarks	Buy	10K	$1.05	$11K	693K
2025-11-28	Erdtmann Rainer M	See Remarks	Buy	40K	$1.10	$44K	683K
2025-01-31	Erdtmann Rainer M	See Remarks	Gift	10K	$0.00	$0	20K
2025-01-31	Erdtmann Rainer M	See Remarks	Gift	10K	$0.00	$0	643K
2025-01-31	Erdtmann Rainer M	See Remarks	Gift	10K	$0.00	$0	20K
2025-01-31	Erdtmann Rainer M	See Remarks	Gift	10K	$0.00	$0	653K
2025-01-31	Erdtmann Rainer M	See Remarks	Gift	10K	$0.00	$0	19K
2025-01-31	Erdtmann Rainer M	See Remarks	Gift	10K	$0.00	$0	663K
2025-01-28	Erdtmann Rainer M	See Remarks	Gift	40K	$0.00	$0	673K
2024-11-30	Valle Franco	Chief Financial Officer	Grant	495	$6.15	$3K	43K
2024-09-30	Hitchcock Michael J.M.	Director	Buy	10K	$10.06	$101K	15K
2024-06-11	Valle Franco	Chief Financial Officer	Buy	13K	$4.43	$55K	43K
2024-05-31	Frias Juan Pablo	Chief Medical Officer	Grant	349	$8.94	$3K	349
2024-05-31	Valle Franco	Chief Financial Officer	Grant	4K	$3.78	$17K	30K
2023-12-29	Erdtmann Rainer M	President and COO	Gift	3K	$0.00	$0	10K
2023-12-29	Erdtmann Rainer M	President and COO	Gift	3K	$0.00	$0	10K
2023-12-29	Erdtmann Rainer M	President and COO	Gift	3K	$0.00	$0	728K
2023-12-29	Erdtmann Rainer M	President and COO	Gift	3K	$0.00	$0	9K
2023-12-29	Erdtmann Rainer M	President and COO	Gift	3K	$0.00	$0	731K
2023-12-29	Erdtmann Rainer M	President and COO	Gift	12K	$0.00	$0	713K
2023-12-29	Erdtmann Rainer M	President and COO	Gift	3K	$0.00	$0	725K
2023-11-30	Valle Franco	Chief Financial Officer	Grant	1K	$3.78	$5K	26K
2023-06-01	A2A Pharmaceuticals, Inc.	TenPercentOwner	Sell	50K	$34.56	$1.7M	3.5M
2023-05-31	A2A Pharmaceuticals, Inc.	TenPercentOwner	Sell	75K	$33.81	$2.5M	3.5M
2023-05-31	Valle Franco	Chief Financial Officer	Grant	4K	$3.78	$16K	24K
2023-05-12	A2A Pharmaceuticals, Inc.	TenPercentOwner	Sell	25K	$33.84	$846K	3.6M
2023-05-09	A2A Pharmaceuticals, Inc.	TenPercentOwner	Sell	150K	$34.50	$5.2M	3.6M
2023-05-08	A2A Pharmaceuticals, Inc.	TenPercentOwner	Sell	100K	$33.99	$3.4M	3.8M
2023-04-20	A2A Pharmaceuticals, Inc.	TenPercentOwner	Sell	200K	$29.12	$5.8M	3.9M
2023-03-31	A2A Pharmaceuticals, Inc.	TenPercentOwner	Sell	200K	$31.25	$6.3M	4.1M
2023-03-30	Cormorant Global Healthcare Master Fund, LP	TenPercentOwner	Buy	400K	$30.00	$12.0M	3.6M
2022-11-30	Valle Franco	Chief Financial Officer	Grant	3K	$3.78	$10K	20K
2022-11-14	Hitchcock Michael J.M.	Director	Buy	5K	$7.93	$40K	5K
2022-11-11	Valle Franco	Chief Financial Officer	Buy	4K	$7.63	$31K	17K
2022-08-16	A2A Pharmaceuticals, Inc.	TenPercentOwner	Buy	31K	$13.87	$426K	4.3M
2022-07-21	A2A Pharmaceuticals, Inc.	TenPercentOwner	Sell	35K	$11.21	$389K	4.3M
2022-06-24	A2A Pharmaceuticals, Inc.	TenPercentOwner	Sell	35K	$11.76	$408K	4.4M
2022-06-01	Biomea Health, LLC	TenPercentOwner	Other transaction	4.4M	$0.00	$0	0
2022-05-31	Valle Franco	Chief Financial Officer	Grant	3K	$4.67	$15K	13K
2022-01-14	Valle Franco	Chief Financial Officer	Buy	10K	$8.68	$87K	10K
2021-09-17	Stergiopoulos Sotirios	Director	Buy	35K	$10.96	$380K	4.4M
2021-09-17	A2A Pharmaceuticals, Inc.	TenPercentOwner	Buy	35K	$10.96	$380K	4.4M
2021-08-23	Butler Thomas Andrew	CEO	Buy	24K	$13.20	$317K	228K
2021-08-23	Erdtmann Rainer M	President & COO	Buy	24K	$13.20	$317K	228K
2021-08-18	Butler Thomas Andrew	CEO	Buy	14K	$10.77	$151K	204K
2021-08-18	Erdtmann Rainer M	President & COO	Buy	14K	$10.77	$151K	204K
2021-08-17	Butler Thomas Andrew	CEO	Buy	14K	$10.79	$151K	190K
2021-08-17	Erdtmann Rainer M	President & COO	Buy	14K	$10.79	$151K	190K
2021-04-20	Cormorant Asset Management, LP	TenPercentOwner	Buy	900K	$17.00	$15.3M	3.2M
2021-04-20	Cormorant Asset Management, LP	TenPercentOwner	Conversion	2.3M	price not stated in the filing	not stated	2.3M
2021-04-15	Erdtmann Rainer M	President and COO	Buy	3K	$17.00	$51K	3K
2021-04-15	Erdtmann Rainer M	President and COO	Buy	2K	$17.00	$41K	2K
2021-04-15	Butler Thomas Andrew	CEO	Buy	176K	$17.00	$3.0M	176K
2021-04-15	Erdtmann Rainer M	President & COO	Buy	176K	$17.00	$3.0M	176K

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.

Large holders (13D and 13G)

One row per reporting person with its latest filing, newest first. JSON

4 holders report 5% or more of BMEA in their latest filing, all on Schedule 13G (passive). The largest reported stake is CVI Investments, Inc. at 9.9% of the class (7,847,232 shares), filed 2026-02-17 for an event on 2025-12-31.

Filed	Form	Holder	Shares	Of class	Event
2026-02-17	13G/Ano. 2	CVI Investments, Inc.corporation	7.8M	9.9%	2025-12-31
2026-02-17	13G/Ano. 2	Heights Capital Management, Inc.corporation	7.8M	9.9%	2025-12-31
2026-02-12	13G	Blue Owl Capital Holdings LPpartnership	4.5M	5.9%	2025-12-31
2026-02-06	13G/Ano. 4	Rainer M. Erdtmannindividual	2.8M	3.9%	2025-12-31
2025-12-08	13G	JANUS HENDERSON GROUP PLCinvestment adviser, parent holding company	3.8M	5.0%	2025-11-28
2025-10-24	13D/Ano. 4	Chen Bihuaindividual	1.1M	1.5%	2025-10-22
2025-10-24	13D/Ano. 4	Cormorant Asset Management, LPpartnership	950K	1.4%	2025-10-22
2025-10-24	13D/Ano. 4	Cormorant Global Healthcare Master Fund, LPpartnership	478K	0.7%	2025-10-22
2025-10-24	13D/Ano. 4	Cormorant Global Healthcare GP, LLCother entity	478K	0.7%	2025-10-22
2025-10-24	13D/Ano. 4	Cormorant Private Healthcare Fund III LPpartnership	457K	0.7%	2025-10-22
2025-10-24	13D/Ano. 4	Cormorant Private Healthcare GP III, LLCother entity	457K	0.7%	2025-10-22

13F holders

Tracked managers holding BMEA at their latest 13F. JSON

4 of the 30 tracked managers held BMEA at their latest 13F, $2.8M in total at quarter-end prices. Renaissance Technologies is the largest at $2.1M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 2 added shares and 2 cut.

Fund	Quarter	Shares	Value	Of portfolio	Change in shares
Renaissance Technologies	2026-06-30	1.5M	$2.1M	0.00%	+143K
Two Sigma Investments	2026-06-30	384K	$565K	0.00%	-4K
Citadel Advisors	2026-06-30	45K	$66K	0.00%	-612K
Point72 Asset Management	2026-06-30	33K	$48K	0.00%	new

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.

What this page is

Biomea Fusion 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 Biomea Fusion (BMEA), SEC CIK 1840439, 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 2026-10-13.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 2026-02-17.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
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 2026-05-11.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 2025-12-11.JSON and CSV
Company record: EDGAR filing index for CIK 1840439Ticker, 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.

Other companies the SEC classifies as pharmaceutical preparations

Other company pages

Datasets

Frequently Asked Questions

How much of BMEA is sold short?

15,713,730 shares were held short at the 2026-10-15 settlement, 4.8 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 BMEA's daily short volume?

On 2026-11-02, 212,555 of the 433,560 BMEA shares reported to FINRA were sold short, 49.0% of the day's reported volume. Short volume is a flow for one day, not a position.

Does BMEA have fails to deliver?

The SEC's latest file shows 79,475 BMEA shares failed to deliver at settlement 2026-10-13. Fails are reported per settlement date and published twice a month with a lag.

Are BMEA insiders buying or selling?

No open-market insider trades were reported for BMEA in the last 90 days. The most recent filings are listed below. Latest filing: Erdtmann Rainer M (See Remarks) on 2025-12-11.

Who owns 5% or more of BMEA?

Which tracked 13F managers own BMEA?

4 of the 30 tracked 13F managers held BMEA shares at their latest filing, $2.8M in all. The largest: Renaissance Technologies (1.5M shares, $2.1M), Two Sigma Investments (384K shares, $565K), Ken Griffin's Citadel Advisors (45K shares, $66K), Steve Cohen's Point72 Asset Management (33K shares, $48K).

Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.